JP7086284B2 - Circuit breakers, circuit breaker systems, information processing methods, and information processing programs - Google Patents

Description

The present invention relates to a circuit breaker, a circuit breaker system, an information processing method, and an information processing program that cuts off an electric circuit based on a leakage current or an overcurrent of the electric circuit.

Conventionally, in a circuit breaker that cuts off an electric circuit based on an electric leakage current or an overcurrent of the electric circuit, a technique for displaying a current value of a leakage current or an energizing current is known. For example, Patent Document 1 proposes a technique for displaying the current value of a leakage current in a leakage breaker that cuts off an electric circuit when the detected value of the leakage current exceeds a reference value.

Japanese Patent Application Laid-Open No. 2003-217433

In the conventional circuit breaker, a liquid crystal display or a display such as a 7-segment LED (Light Emitting Diode) is arranged in a place that can be visually recognized from the front of the circuit breaker body, and the measured value is displayed by such a display as characters or a graph. In the case of a circuit breaker that is required to display the specifications or characteristics by the standard, if the display is placed in front of the circuit breaker body, the range for displaying the specifications or characteristics of the circuit breaker will be narrowed, and the characters indicating the specifications or characteristics will be displayed. May be smaller. Further, when the display is added to the side surface of the circuit breaker in a modular structure and the display is arranged at a position that does not interfere with the display area of the specifications or characteristics of the circuit breaker, the outer shape of the circuit breaker becomes large.

The present invention has been made in view of the above, and an object of the present invention is to obtain a circuit breaker capable of reducing the space for displaying the detected value of the leakage current or the energization current.

In order to solve the above-mentioned problems and achieve the object, the circuit breaker of the present invention includes an opening / closing mechanism unit, a tripping device, a detection unit, a drive unit, a main body case, one light emitting diode, and blinking. It is equipped with a control unit. The opening / closing mechanism opens / closes the electric circuit. The tripping device activates the opening / closing mechanism. The detection unit detects the current value of the leakage current or the energizing current of the electric circuit. The drive unit drives the tripping device based on the detection result of the detection unit. The main body case covers the opening / closing mechanism, the tripping device, the detection unit, and the drive unit. One light emitting diode is arranged in a position visible from the outside of the main body case. The blinking control unit blinks one light emitting diode based on the current value detected by the detection unit. The blinking control unit includes a ratio calculation unit and a drive unit. The ratio calculation unit calculates the ratio of the current value detected by the detection unit to the sensitivity current set value. The drive unit blinks one light emitting diode based on the ratio calculated by the ratio calculation unit.

According to the present invention, there is an effect that the space for displaying the detected value of the leakage current or the energization current can be reduced.

The figure which shows the structural example of the circuit breaker which concerns on Embodiment 1 of this invention. The figure which shows the structural example of the circuit breaker system which concerns on Embodiment 1. External perspective view of the circuit breaker according to the first embodiment Top view of the circuit breaker according to the first embodiment External perspective view of the circuit breaker in the state where the main body cover according to the first embodiment is removed. Cross-sectional view of the main part along the VI-VI line shown in FIG. Top view of the circuit breaker with the cover removed according to the first embodiment. Top view of the leakage detection circuit unit according to the first embodiment Top view of the leakage detection circuit unit in the state where the unit cover according to the first embodiment is removed. A block diagram showing an example of a specific configuration of the circuit breaker according to the first embodiment. The figure which shows the structural example of the blinking control part which concerns on Embodiment 1. The figure for demonstrating the 1st blinking mode by the blinking control unit which concerns on Embodiment 1. The figure for demonstrating the 2nd blinking mode by the blinking control unit which concerns on Embodiment 1. The figure for demonstrating the 3rd blinking mode by the blinking control unit which concerns on Embodiment 1. A flowchart showing an example of processing by the circuit breaker according to the first embodiment. The figure which shows the structural example of the information processing apparatus which concerns on Embodiment 1. The figure for demonstrating the relationship between the blinking pattern in the 2nd blinking mode which concerns on Embodiment 1 and the image pickup result of the image pickup unit. The figure for demonstrating the relationship between the blinking pattern of data in the 3rd blinking mode which concerns on Embodiment 1 and the image pickup result of the image pickup unit. The figure which shows an example of the characteristic display area of the circuit breaker which concerns on Embodiment 1. The figure which shows the other example of the characteristic display area of the circuit breaker which concerns on Embodiment 1. The figure which shows an example of the characteristic display area in the case where the sensitivity changeover switch is not provided in the circuit breaker which concerns on Embodiment 1. The figure which shows the other example of the characteristic display area in the case where the sensitivity changeover switch is not provided in the circuit breaker which concerns on Embodiment 1. The figure which shows an example of the display screen of the display part of the information processing apparatus which concerns on Embodiment 1. The figure which shows the other example of the display screen of the display part of the information processing apparatus which concerns on Embodiment 1. A flowchart showing an example of processing by the processing unit of the information processing apparatus according to the first embodiment. The figure which shows an example of the hardware configuration of the microcomputer of the circuit breaker which concerns on Embodiment 1. A block diagram showing another example of a specific configuration of the circuit breaker according to the first embodiment.

Hereinafter, the circuit breaker, the circuit breaker system, the information processing method, and the information processing program according to the embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

Embodiment 1.
FIG. 1 is a diagram showing a configuration example of a circuit breaker according to the first embodiment of the present invention. As shown in FIG. 1, the circuit breaker 1 according to the first embodiment includes an opening / closing mechanism portion 10 for opening / closing an electric current 4 between a power source 2 and a load 3, and a tripping device 20 for operating the opening / closing mechanism portion 10. , A detection unit 30 for detecting the current value of the leakage current or the energizing current of the electric circuit 4.

Further, the circuit breaker 1 has a drive unit 40 for driving the tripping device 20, an opening / closing mechanism unit 10, a tripping device 20, a detection unit 30, a drive unit 40, and a blinking control based on the detection result of the detection unit 30. A main body case 70 that covers the portion 60 is provided. The detection unit 30 includes a zero-phase current transformer for detecting the leakage current of the electric circuit 4 or a current transformer for detecting the current value of the energizing current.

The circuit breaker 1 includes a light emitting diode 50 whose part is exposed to the outside from the main body case 70, and a blinking control unit 60 that blinks the light emitting diode 50 based on the current value detected by the detection unit 30. As described above, the circuit breaker 1 according to the first embodiment blinks one light emitting diode 50 based on the current value detected by the detection unit 30. Therefore, the space for displaying the current value of the leakage current or the energizing current can be reduced.

Therefore, for example, when the specifications and characteristics of the circuit breaker 1 are required to be displayed, the space for displaying the current value of the leakage current or the energizing current prevents the characters indicating the specifications or characteristics from becoming smaller. be able to. Further, the size of the circuit breaker 1 can be reduced as compared with the case where a display for displaying the current value of the leakage current or the energizing current is added to the side surface of the circuit breaker main body by the modular structure. Further, since the space for displaying the current value of the leakage current or the energizing current is small, the circuit breaker 1 can be easily made into the same shape as the standard product, whereby, for example, the shape of the panel cut of the switchboard or the control panel can be changed. It is possible to avoid having a shape different from that of the standard product.

Hereinafter, the circuit breaker system including the circuit breaker 1 according to the first embodiment will be specifically described. FIG. 2 is a diagram showing a configuration example of the circuit breaker system according to the first embodiment. As shown in FIG. 2, the circuit breaker system 200 according to the first embodiment includes the circuit breaker 1 described above and the information processing device 100. The information processing apparatus 100 includes an image pickup unit 110 and a display unit 120, captures the blinking of the light emitting diode 50 described above in the circuit breaker 1 by the image pickup unit 110, and based on the imaged result, the leakage current or the energization current of the electric circuit 4 The current value of is displayed on the display unit 120 in characters.

First, the configuration of the circuit breaker 1 will be specifically described. FIG. 3 is an external perspective view of the circuit breaker according to the first embodiment. FIG. 4 is a plan view of the circuit breaker according to the first embodiment. FIG. 5 is an external perspective view of the circuit breaker in the state where the main body cover according to the first embodiment is removed. FIG. 6 is a cross-sectional view of a main part along the VI-VI line shown in FIG. FIG. 7 is a plan view of the circuit breaker in the state where the cover according to the first embodiment is removed.

As shown in FIG. 3, the main body case 70 of the circuit breaker 1 includes a main body base 71 and a main body cover 72. Further, as shown in FIGS. 4 and 5, the circuit breaker 1 is exposed at one end of the main body case 70, and is connected to a plurality of power supply side connection terminals 14 connected to the power supply 2 and at the other end of the main body case 70. It is provided with a plurality of load-side connection terminals 15 that are exposed and connected to the load 3.

As shown in FIG. 6, the opening / closing mechanism portion 10 of the circuit breaker 1 has a fixed contact 11 and a movable contact 12. The contact between the fixed contact 11 and the movable contact 12 closes the electric circuit 4 and turns on the circuit breaker 1. Further, the electric circuit 4 is opened and the circuit breaker 1 is turned off by the separation between the fixed contact 11 and the movable contact 12. As shown in FIGS. 3 to 6, the circuit breaker 1 has a handle 13, and by manually operating the handle 13, the fixed contact 11 and the movable contact 12 are brought into contact with each other or separated from each other. be able to.

Further, as shown in FIGS. 6 and 7, the circuit breaker 1 includes a trip bar 16 that acts on the opening / closing mechanism portion 10 to turn off the circuit breaker 1. Further, as shown in FIG. 6, the circuit breaker 1 outputs a current that is directly proportional to the leakage current of the electric circuit 4 and the overcurrent tripping device 17 that drives the trip bar 16 when an overcurrent or a short-circuit current flows through the electric circuit 4. It is equipped with a zero-phase current changer 31. The zero-phase current transformer 31 constitutes a part of the detection unit 30.

Further, as shown in FIGS. 5 and 6, the circuit breaker 1 drives the tripping device 20 and blinks the light emitting diode 50 based on the current signal output from the zero-phase current transformer 31. A leakage detection circuit unit 80 is provided. The leakage detection circuit unit 80 includes a portion of the detection unit 30 excluding the zero-phase current transformer 31, a drive unit 40, and a blinking control unit 60.

As shown in FIG. 6, the tripping device 20 includes an actuator 21 and a tripping relay 22 for driving the actuator 21. The trip relay 22 drives the actuator 21 when a trip signal is output from the leakage detection circuit unit 80, and the trip bar 16 is driven by the actuator 21. As a result, the trip bar 16 acts on the opening / closing mechanism portion 10 to turn off the circuit breaker 1. The leakage detection circuit unit 80 outputs a trip signal to the trip device 20 when the current value of the leak current in the electric circuit 4 becomes equal to or higher than the sensitivity current set value.

Here, the configuration of the leakage detection circuit unit 80 will be described. FIG. 8 is a plan view of the leakage detection circuit unit according to the first embodiment, and FIG. 9 is a plan view of the leakage detection circuit unit with the unit cover according to the first embodiment removed.

As shown in FIG. 8, the leakage detection circuit unit 80 includes a unit case 83 including a unit base 81 and a unit cover 82, and an electronic circuit unit 84 arranged inside the unit case 83. The electronic circuit unit 84 has a printed wiring board 85, and a plurality of components are mounted on the printed wiring board 85.

Specifically, as shown in FIG. 9, the printed wiring board 85 includes the above-mentioned light emitting diode 50, a resistor 51 that suppresses the current of the light emitting diode 50 to a specified current value, a tripping device 20, and a light emitting diode. A diode 52 that controls 50 and the like is mounted. Further, on the printed wiring board 85, a sensitivity changeover switch 53 for switching the leakage sensitivity and an operation time changeover switch 54 for switching the leakage cutoff time are mounted.

As shown in FIG. 8, openings 82a and 82b are formed in the unit cover 82. The light emitting diode 50 is arranged in the leakage detection circuit unit 80 in a state where a part of the light emitting diode 50 protrudes from the opening 82a. The sensitivity changeover switch 53 and the operation time changeover switch 54 are arranged in the leakage detection circuit unit 80 in a state of being exposed from the opening 82b.

Further, as shown in FIG. 4, the main body cover 72 has a characteristic display area 58 in which openings 72a, 72b, and 72c are formed. The light emitting diode 50 is arranged in the circuit breaker 1 in a state where a part of the light emitting diode 50 is exposed or protrudes from the opening 72a. The sensitivity changeover switch 53 is arranged in the circuit breaker 1 with the knob 53a protruding from the opening 72b. The operation time changeover switch 54 is arranged in the circuit breaker 1 with the knob 54a protruding from the opening 72c.

As shown in FIG. 4, the circuit breaker 1 also has a test button 55 for testing whether the circuit breaker 1 trips when an electric leakage occurs, an electric leakage display button 56 for displaying the electric leakage occurrence, and the like. There is. The earth leakage display button 56 protrudes from the main body case 70 when the circuit breaker 1 trips when an earth leakage occurs. Further, the test button 55 is pressed when testing the leakage detection operation of the circuit breaker 1.

When the microcomputer 52 determines that the leakage current of the electric circuit 4 is equal to or higher than the sensitivity current set value based on the current signal from the zero-phase current transformer 31, the light emitting diode 50 is based on the current value of the leakage current of the electric circuit 4. Flashes. The blinking state of the light emitting diode 50 can be visually recognized from above the front of the circuit breaker 1 through the opening 82a of the unit cover 82 and the opening 72a of the main body cover 72.

FIG. 10 is a block diagram showing an example of a specific configuration of the circuit breaker according to the first embodiment. As shown in FIG. 10, the circuit breaker 1 includes an opening / closing mechanism portion 10, a tripping device 20, a zero-phase current transformer 31, a trigger circuit 44, a light emitting diode 50, a resistor 51, and a microcomputer 52. , The sensitivity changeover switch 53 and the leakage display button 56 are provided. Further, the circuit breaker 1 includes an input unit 57 and a power supply circuit 90. In FIG. 10, the test button 55 is not shown.

The microcomputer 52 includes an AD (Analogue-to-Digital) converter 32 and an effective value calculation unit 33. The AD converter 32 converts an analog current signal from the zero-phase current transformer 31 into a digital signal. The effective value calculation unit 33 calculates the effective value Ia of the leakage current of the electric circuit 4 based on the digital signal output from the AD converter 32.

The detection unit 30 shown in FIGS. 1 and 10 includes a zero-phase current transformer 31, an AD converter 32, and an effective value calculation unit 33. The electric circuit 4 shown in FIG. 10 is a three-phase electric circuit. A circuit for converting the current signal of the zero-phase current converter 31 into a voltage is provided between the zero-phase current converter 31 and the AD converter 32, and the AD converter 32 converts the current signal into a voltage. Converts the analog value of the converted current signal to a digital value.

Further, the microcomputer 52 includes a comparison unit 41, a sensitivity current value setting unit 42, and a trip output unit 43. The comparison unit 41 compares the effective value Ia of the leakage current calculated by the effective value calculation unit 33 with the sensitivity current set value Is. The sensitivity current value setting unit 42 sets the sensitivity current setting value Is corresponding to the position of the knob 53a of the sensitivity changeover switch 53 in the comparison unit 41. The trip output unit 43 outputs a trip signal to the trigger circuit 44 when the effective value Ia of the leakage current is equal to or higher than the sensitivity current set value Is based on the comparison result by the comparison unit 41.

When the trip signal is output from the trip output unit 43, the trigger circuit 44 outputs the trip signal to the trip device 20. When the trip output unit 43 outputs a trip signal, the trip device 20 operates the opening / closing mechanism unit 10 via the trip bar 16 to change the electric circuit 4 from the closed state to the open state. The drive unit 40 shown in FIG. 1 includes a comparison unit 41, a sensitivity current value setting unit 42, a trip output unit 43, and a trigger circuit 44. The effective value Ia of the leakage current is an example of the current value.

Further, the microcomputer 52 includes a blinking control unit 60 that outputs a drive signal Sg that blinks the light emitting diode 50 based on the effective value Ia of the leakage current calculated by the effective value calculation unit 33. The blinking control unit 60 outputs, for example, a drive signal Sg that blinks the light emitting diode 50 based on the effective value Ia of the leakage current when the circuit breaker 1 is not in the off state. The blinking control unit 60 does not output the drive signal Sg, for example, when the circuit breaker 1 is turned off by the drive unit 40. In this case, the light emitting diode 50 does not light.

Further, the blinking control unit 60 can store the user set value Issue, which is a value set by the user's operation on the input unit 57. The blinking control unit 60 blinks the light emitting diode 50 based on the effective value Ia of the leakage current when the effective value Ia of the leakage current is equal to or more than the user set value Iset and the circuit breaker 1 is not in the off state. The drive signal Sg can be output. Further, the blinking control unit 60 does not output the drive signal Sg when the effective value Ia of the leakage current is less than the user set value Iset. As a result, when the effective value Ia of the leakage current is less than the user set value Iset, the light emitting diode 50 does not light.

FIG. 11 is a diagram showing a configuration example of the blinking control unit according to the first embodiment. The blinking control unit 60 shown in FIG. 11 includes a storage unit 61, a state determination unit 62, a ratio calculation unit 63, and a drive unit 64. The storage unit 61 stores the user set value Set based on the operation of the user to the input unit 57.

When the effective value Ia of the leakage current is less than the sensitivity current set value Is, the state determination unit 62 determines whether or not the effective value Ia of the leakage current is equal to or more than the user set value Iset and the circuit breaker 1 is in the ON state. judge. The state determination unit 62 operates the ratio calculation unit 63 and the drive unit 64 when the effective value Ia of the leakage current is equal to or higher than the user set value Iset and the circuit breaker 1 is in the ON state, and the drive unit 64 operates the light emitting diode. Make 50 blink. When the effective value Ia of the leakage current is less than the user set value Iset or the circuit breaker 1 is in the off state, the state determination unit 62 does not operate the ratio calculation unit 63 and the drive unit 64, and the light emitting diode 50 is turned off. To maintain.

When the user set value Iset is not set, the state determination unit 62 operates the ratio calculation unit 63 and the drive unit 64 when the circuit breaker 1 is in the ON state, and blinks the light emitting diode 50 in the drive unit 64. Let me. Further, when the user set value Iset is not set, the state determination unit 62 does not operate the ratio calculation unit 63 and the drive unit 64 if the circuit breaker 1 is in the off state, and maintains the light emitting diode 50 in the off state. do.

The ratio calculation unit 63 calculates the ratio Ra of the effective value Ia of the leakage current to the sensitivity current set value Is set by the sensitivity current value setting unit 42. The drive unit 64 blinks the light emitting diode 50 by outputting the drive signal Sg corresponding to the ratio Ra calculated by the ratio calculation unit 63. The drive unit 64 can blink the light emitting diode 50 by a blinking mode selected from a plurality of blinking modes including a first blinking mode, a second blinking mode, and a third blinking mode.

First, the first blinking mode will be described. FIG. 12 is a diagram for explaining a first blinking mode by the blinking control unit according to the first embodiment. As shown in FIG. 12, when the first blinking mode is selected, the drive unit 64 uses the ratio Ra calculated by the ratio calculation unit 63 as the ratio of the lighting time and the extinguishing time of the light emitting diode 50 to the light emitting diode. Make 50 blink. That is, the drive unit 64 outputs a drive signal Sg to light the light emitting diode 50 during the “Ra%” time and the light emitting diode 50 during the “100-Ra%” time in the preset period T1. The drive signal Sg is not output in order to turn off the light. The preset period T1 arrives repeatedly.

Next, the second blinking mode will be described. FIG. 13 is a diagram for explaining a second blinking mode by the blinking control unit according to the first embodiment. In the second blinking mode, the light emitting diode 50 is blinked using a blinking format that includes a header and data. The header is defined by a preset blinking pattern, and the data is defined by a blinking pattern according to the ratio Ra.

The blinking pattern of the header shown in FIG. 13 is a blinking pattern of "01111110" at times t1 to t8. "0" indicates that the light emitting diode 50 is turned off, and "1" indicates that the light emitting diode 50 is turned on. Further, each length of the time t1 to t8 is the length of the period Ta1.

The blinking pattern of the data shown in FIG. 13 shows the ratio Ra as a 7-digit binary number at times t9 to t15. "0" indicates that the light emitting diode 50 is turned off, and "1" indicates that the light emitting diode 50 is turned on. For example, when the ratio Ra is "1%", the blinking pattern of the light emitting diode 50 is "0000001", and when the ratio Ra is "50%", the blinking pattern of the light emitting diode 50 is "0110010". be. When the ratio Ra is "99%", the blinking pattern of the light emitting diode 50 is "1100011".

Next, the third blinking mode will be described. FIG. 14 is a diagram for explaining a third blinking mode by the blinking control unit according to the first embodiment. In the third blinking mode, as in the case of the second blinking mode, the light emitting diode 50 blinks using the blinking format including the header and the data.

The blinking pattern of the header shown in FIG. 14 is a blinking pattern that becomes "1010" at times t1 to t4. "0" indicates that the light emitting diode 50 is turned off, and "1" indicates that the light emitting diode 50 is turned on. Further, each length of the time t1 to t4 is the length of the period Ta2. The length of the period Ta2 is, for example, the same as the length of the period Ta1.

The data shown in FIG. 14 defines the tens place in the ratio Ra from time t5 to t14 and the ones place in the ratio Ra from time t17 to t26. "0" indicates that the light emitting diode 50 is turned off, and "1" indicates that the light emitting diode 50 is turned on. Further, each length of the time t5 to t28 is the length of the period Ta3. The length of the period Ta3 is, for example, one-third of the length of the period Ta2.

The larger the tens place in the ratio Ra from the time t5 to t14, the longer the lighting period of the light emitting diode 50, and the larger the ones place in the ratio Ra from the time t17 to t26, the longer the lighting period of the light emitting diode 50. Further, the times t15, t16, t27, and t28 are "0". When the tens place in the ratio Ra is 1 or more, the time t5 is "1", and when the 1s place in the ratio Ra is 1 or more, the time t17 is "1".

For example, when the ratio Ra is "1%", the blinking pattern of the light emitting diode 50 is "0000000000" in the tens place and "110000000000" in the 1s place. When the ratio Ra is "49%", the blinking pattern of the light emitting diode 50 is "1111100000" in the tens place and "1111111111" in the ones place. When the ratio Ra is "99%", the blinking pattern of the light emitting diode 50 is "11111111111" in the tens place and "11111111111" in the ones place.

In the third blinking mode, the drive unit 64 is set to "0" at the time t5 when the tens place is "0", and is set to "1" at the time t5 when the tens place is not "0". Similarly, in the third blinking mode, the drive unit 64 sets "0" at the time t17 when the 1st place is "0", and "1" at the time t17 when the 10th place is not "0". And. As a result, as will be described later, the information processing apparatus 100 can accurately detect the ratio Ra from the blinking state of the light emitting diode 50.

Subsequently, the process by the circuit breaker 1 will be described with reference to the flowchart. FIG. 15 is a flowchart showing an example of processing by the circuit breaker according to the first embodiment. The process shown in FIG. 15 is executed when the circuit breaker 1 is in the ON state.

As shown in FIG. 15, the AD converter 32 of the detection unit 30 in the circuit breaker 1 samples the instantaneous value of the leakage current by sampling the current signal of the zero-phase current transformer 31 (step S11). The effective value calculation unit 33 of the detection unit 30 calculates the effective value Ia of the leakage current based on the instantaneous value of the sampled leakage current (step S12).

The comparison unit 41 of the drive unit 40 reads out the sensitivity current set value Is set by the sensitivity current value setting unit 42 (step S13). The comparison unit 41 determines whether or not the effective value Ia of the leakage current is equal to or higher than the sensitivity current set value Is (step S14). When the comparison unit 41 determines that the effective value Ia of the leakage current is not equal to or higher than the sensitivity current set value Is (step S14: No), the state determination unit 62 of the blinking control unit 60 determines that the effective value Ia of the leakage current is the user. It is determined whether or not the set value is set or more (step S15).

When the state determination unit 62 of the blinking control unit 60 determines that the effective value Ia of the leakage current is equal to or higher than the user set value Iset (step S15: Yes), the drive unit 64 drives the drive signal according to the ratio Ra calculated last time. It is determined whether or not the first set of the above is being output (step S16). Here, the first set will be described. As described above, since the light emitting diode 50 blinks including the information of the ratio Ra, it blinks in the selected blinking mode. One set is the blinking of the light emitting diode 50 which is the minimum necessary for blinking including the information of the ratio Ra. Further, the blinking of the light emitting diode 50 may be performed not only for one set but repeatedly. In this case, the first set of blinking refers to the first blinking of the light emitting diode 50, which is the minimum necessary for blinking including the information of the ratio Ra.

When the ratio calculation unit 63 of the blinking control unit 60 determines that the drive unit 64 is not outputting the first set of drive signals corresponding to the previously calculated ratio Ra by the state determination unit 62 (step S16: No). , The ratio Ra of the effective value Ia of the leakage current to the sensitivity current set value Is is newly calculated (step S17). If the state determination unit 62 determines that the drive unit 64 is not outputting the first set of drive signals according to the ratio Ra calculated last time (step S16: No), the first set of drive signals blinks. Not only the case where the ratio has already been calculated, but also the case where the ratio Ra calculated last time is not calculated after the circuit breaker 1 is activated is included. The drive unit 64 of the blinking control unit 60 outputs a drive signal Sg according to the ratio Ra newly calculated by the ratio calculation unit 63 (step S18). As a result, the light emitting diode 50 blinks based on the ratio Ra of the effective value Ia of the leakage current to the sensitivity current set value Is. When the ratio Ra is newly calculated in step S17, when the flowchart of FIG. 15 is executed again, the newly calculated ratio Ra is treated as the previously calculated ratio Ra.

When the trip output unit 43 of the drive unit 40 determines that the effective value Ia of the leakage current is equal to or higher than the sensitivity current set value Is (step S14: Yes), the trip output unit 43 outputs a trip signal to the trigger circuit 44 (step S19). .. As a result, the tripping device 20 operates the opening / closing mechanism portion 10 to change the electric circuit 4 from the closed state to the open state.

When the state determination unit 62 of the blinking control unit 60 determines that the process of step S19 is performed, or when the effective value Ia of the leakage current is not equal to or more than the user set value Iset (step S15: No), the light emitting diode 50 Is determined whether or not is blinking (step S20). When the state determination unit 62 determines that the light emitting diode 50 is blinking (step S20: Yes), the state determination unit 62 stops the output of the drive signal Sg by the drive unit 64 and stops the blinking of the light emitting diode 50 (step S21). ..

When the circuit breaker 1 is determined by the state determination unit 62 that the drive unit 64 is outputting the first set of drive signals corresponding to the ratio Ra calculated last time (step S16: Yes), the process of step S18. When is completed, when it is determined that the light emitting diode 50 is not blinking (step S20: No), or when the process of step S21 is completed, the process shown in FIG. 15 is terminated. The process shown in FIG. 15 is repeated as long as the circuit breaker 1 is in the energized state.

Next, the information processing device 100 in the circuit breaker system 200 will be described. FIG. 16 is a diagram showing a configuration example of the information processing apparatus according to the first embodiment. As shown in FIG. 16, the information processing apparatus 100 according to the first embodiment includes an image pickup unit 110, a display unit 120, an input unit 130, a communication unit 140, and a processing unit 150. The information processing device 100 is a mobile device such as a smartphone or a tablet. Further, the information processing apparatus 100 may be composed of a server and a client. In this case, since the processing of the processing unit 150 can be performed by the server instead of the client, the processing load on the client side can be reduced. Therefore, even a client with low processing power can be used. Further, the client is not limited to the mobile device, and for example, a digital camera with a communication function may be used as the client. Needless to say, the information processing device 100 corresponds to a computer.

The image pickup unit 110 includes, for example, an image pickup element such as a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and an optical system such as a lens. The image pickup unit 110 can take an image of the circuit breaker 1 according to the user's operation on the input unit 130. The display unit 120 is, for example, an LCD (Liquid Crystal Display) or an organic EL (ElectroLuminescence) display.

The input unit 130 includes, for example, a keyboard, a mouse, a keypad, a touch panel, and the like, and is operated by the user of the information processing apparatus 100. The communication unit 140 is connected to a network such as a LAN (Local Area Network) or a WAN (Wide Area Network), and can communicate with other devices via the network.

The processing unit 150 performs a process of displaying the current value of the leakage current of the electric circuit 4 on the display unit 120 in characters based on the image captured by the image pickup unit 110. The processing unit 150 includes an acquisition unit 151, a conversion unit 152, and a display processing unit 153.

The acquisition unit 151 acquires information on the moving image of the circuit breaker 1 captured by the image pickup unit 110 by operating the user's input unit 130 from the image pickup unit 110. The moving image information of the circuit breaker 1 includes the moving image information of the characteristic display area 58 to which the light emitting diode 50 is exposed. The conversion unit 152 converts the blinking state of the light emitting diode 50 into the current value of the leakage current based on the information of the moving image of the circuit breaker 1 acquired by the acquisition unit 151. The display processing unit 153 displays the current value converted by the conversion unit 152 on the display unit 120.

Based on the information of the moving image of the characteristic display area 58, the conversion unit 152 changes from the blinking state of the light emitting diode 50 to any of the blinking modes of the first blinking mode, the second blinking mode, and the third blinking mode. Determine if it is blinking. For example, the conversion unit 152 can determine that the blinking of the light emitting diode 50 is the blinking of the first blinking mode when there is no header. Further, if there is a header, the conversion unit 152 can determine whether the blinking of the light emitting diode 50 is the blinking of the second blinking mode or the blinking of the third blinking mode depending on the type of the header.

The conversion unit 152 determines the ratio Ra from the blinking state of the light emitting diode 50 based on the determined blinking mode. For example, when the determined blinking mode is the first blinking mode, the conversion unit 152 sets the ratio of the lighting period and the blinking period of the light emitting diode 50 in the period T1 to Ra.

Further, when the determined blinking mode is the second blinking mode, the conversion unit 152 converts the blinking state of the light emitting diode 50 at times t9 to t15 into 7-digit binary information. In the second blinking mode, when there is a discrepancy between the imaging timing of the imaging unit 110 and the blinking timing of the light emitting diode 50, there is a possibility that the lighting of the light emitting diode 50 cannot be detected accurately.

Therefore, in the circuit breaker 1 according to the first embodiment, the period Ta1 is set to be three times or more the frame rate of the image pickup unit 110. FIG. 17 is a diagram for explaining the relationship between the blinking pattern in the second blinking mode according to the first embodiment and the imaging result of the imaging unit, and is the case where the period Ta1 is for three frames of the imaging unit 110. Here is an example. In FIG. 17, the light emitting diode 50 is described as an LED. The frame rate of the image pickup unit 110 is, for example, 30 fps, and the period Ta1 is, for example, 100 ms. The frame number indicates the frame number of the captured image output from the imaging unit 110.

In the first case shown in FIG. 17, the period of three frames of the image captured by the image pickup unit 110 and the period Ta1 which is the unit period of blinking of the light emitting diode 50 coincide with each other. Therefore, the conversion unit 152 can determine that the light emitting diode 50 is continuously lit in the frames having frame numbers 4 to 18.

Further, in the second case and the third case shown in FIG. 17, since there is a frame in which the light emitting diode 50 is turned on or off in the middle in each period Ta1, the lighting of the light emitting diode 50 cannot be detected in such a frame. There is. Therefore, if the conversion unit 152 can detect the lighting of the light emitting diode 50 in two or more consecutive frames in the period Ta1 in each period Ta1, the conversion unit 152 determines that the light emitting diode 50 is lit in the period Ta1. As a result, the conversion unit 152 can accurately determine the header.

Similarly, when the conversion unit 152 can detect the lighting of the light emitting diode 50 in two or more consecutive frames in the period Ta1 in each period Ta1, the light emitting diode 50 is lit in the period Ta1. Is determined. As a result, the conversion unit 152 can accurately determine the data.

When the determined blinking mode is the third blinking mode, the conversion unit 152 converts the blinking state of the light emitting diode 50 at times t5 to t14 into a value in the tens place, and blinks the light emitting diode 50 at times t17 to t26. Converts the state to a ones digit value.

In the third blinking mode, as in the case of the second conversion mode, the lighting of the light emitting diode 50 may not be detected in the frame in which the light emitting diode 50 is turned on or off in the middle in each period Ta2. Therefore, the conversion unit 152 determines that the light emitting diode 50 is lit in the period Ta2 when the lighting of the light emitting diode 50 can be detected in two or more consecutive frames in the period Ta2 in each period Ta2 in the header. As a result, the conversion unit 152 can accurately determine the header. The length of the period Ta2 is the same as the length of the period Ta1.

Further, in the circuit breaker 1, in the case of the third blinking mode, the data blinking pattern is set as shown in FIG. 14, so that the conversion unit 152 compares the data blinking pattern in the third blinking mode. It can be converted to Ra with high accuracy. FIG. 18 is a diagram for explaining the relationship between the blinking pattern of data in the third blinking mode according to the first embodiment and the imaging result of the imaging unit. In FIG. 18, the light emitting diode 50 is described as an LED.

In FIG. 18, in the first case, the period of one frame of the image captured by the image pickup unit 110 coincides with the unit period of blinking of the light emitting diode 50, and in the second case, one of the images captured by the image pickup unit 110 is 1. The period of the frame and the unit period of blinking of the light emitting diode 50 are different from each other. The frame rate of the image pickup unit 110 is, for example, 30 fps, and the period Ta3 is, for example, 33.3 ms.

As shown in FIG. 18, in both the first case and the second case when the ratio Ra is "88%", the light emitting diode 50 is continuously generated in the frames having frame numbers 1 to 9 in the tens place. Is lit, but the conversion unit 152 ignores the frame whose frame number is 1. Then, the conversion unit 152 determines that the value of the tens digit is "8" because the light emitting diode 50 is continuously lit in eight frames having frame numbers 2 to 9.

Further, in both the first case and the second case when the ratio Ra is "88%", the light emitting diode 50 is continuously lit in the frame numbers 13 to 21 at the 1st place. However, the conversion unit 152 ignores the frame having the frame number 13 . Since the light emitting diode 50 is continuously lit in eight frames having frame numbers 14 to 21, the conversion unit 152 can determine that the value of the ones digit is "8".

Further, when the ratio Ra is "11%", the conversion unit 152 ignores the frame having the frame number 1 and the frame having the frame number 13 as in the case where the ratio Ra is "88%". In both the first case and the second case when the ratio Ra is "11%", the light emitting diode 50 is lit in the frame with the frame number 2 at the tens place. Therefore, the conversion unit 152 can determine that the value of the tens digit is "1".

Further, in both the first case and the second case when the ratio Ra is "11%", the light emitting diode 50 is lit in the frame with the frame number 14 at the 1st place. Therefore, the conversion unit 152 can determine that the value of the ones digit is "1".

In this way, the conversion unit 152 can accurately detect the ratio Ra by ignoring the frame having the frame number 1 and the frame having the frame number 13.

In the characteristic display area 58 of the circuit breaker 1 described above, a character indicating the sensitivity current set value Is is attached. The characteristic display area 58 is imaged when the blinking state of the light emitting diode 50 is imaged by the image pickup unit 110. The conversion unit 152 can detect the sensitivity current set value Is based on the information of the image output from the image pickup unit 110. Then, the conversion unit 152 can convert the ratio Ra into the current value of the leakage current based on the detected sensitivity current set value Is.

FIG. 19 is a diagram showing an example of a characteristic display area of the circuit breaker according to the first embodiment. As shown in FIG. 19, the characteristic display area 58 of the main body cover 72 is provided with a sensitivity current set value display area 73 indicating characters indicating the sensitivity current set value Is.

In the sensitivity current set value display area 73, characters indicating the sensitivity current set value Is are arranged by printing or the like corresponding to each of the plurality of positions where the knob 53a of the sensitivity changeover switch 53 can be moved. In the example shown in FIG. 19, the characters "500 mA", "300 mA", and "100 mA" are arranged in the sensitivity current set value display area 73 as characters indicating the sensitivity current set value Is. Further, in the example shown in FIG. 19, the knob 53a of the sensitivity changeover switch 53 is at a position corresponding to “100 mA”.

Here, it is assumed that the ratio Ra is "50%" and the sensitivity current set value display area 73 is in the state shown in FIG. Further, it is assumed that the region 76 including the light emitting diode 50, the sensitivity changeover switch 53, and the sensitivity current set value display region 73 is imaged by the image pickup unit 110. In this case, the conversion unit 152 detects "100 mA" as the sensitivity current set value Is from the position of the knob 53a and the characters corresponding to the position of the knob 53a based on the image information output from the image pickup unit 110. do. Since the ratio Ra is "50%" and the sensitivity current set value Is is "100 mA", the conversion unit 152 determines that the current value of the leakage current is "50 mA".

Further, the characteristic display area 58 may include a code information display area for displaying information in which the characteristic accuracy of the circuit breaker 1 obtained at the time of the shipping test of the circuit breaker 1 is two-dimensionally coded. FIG. 20 is a diagram showing another example of the characteristic display area of the circuit breaker according to the first embodiment. The characteristic display area 58 shown in FIG. 20 includes a code information display area 74 in addition to the sensitivity current set value display area 73.

In the code information display area 74, two-dimensional code information in which the characteristic accuracy of the circuit breaker 1 and the specifications of the circuit breaker 1 obtained at the time of the shipping test of the circuit breaker 1 are two-dimensionally coded is arranged by printing or the like. .. The characteristic accuracy of the circuit breaker 1 includes, for example, a detection error of the leakage current by the detection unit 30. The specifications of the circuit breaker 1 include information such as, for example, the rated voltage, the rated current, and the serial number of the circuit breaker 1.

Here, it is assumed that the characteristic accuracy information included in the code information display area 74 includes information indicating that the detection error of the detection unit 30 is −5%. Further, it is assumed that the ratio Ra is "50%" and the sensitivity current set value Is is "100 mA". Further, it is assumed that the region 77 including the light emitting diode 50, the sensitivity changeover switch 53, the sensitivity current set value display region 73, and the code information display region 74 is imaged by the image pickup unit 110. In this case, the conversion unit 152 determines that the detection error of the detection unit 30 is "-5%" based on the information of the image in the code information display area 74, and multiplies "50mA" by "1.05". Therefore, it is determined that the current value of the leakage current after the error correction is "52.5 mA".

The characteristic display area 58 shown in FIG. 20 may not include the sensitivity current set value display area 73. In this case, the two-dimensional code information of the code information display area 74 includes information in which information of a plurality of sensitivity current set values Is that can be switched by the sensitivity changeover switch 53 is two-dimensionally coded. The conversion unit 152 can obtain information on a plurality of sensitivity current set values Is that can be switched by the sensitivity changeover switch 53 from the two-dimensional code information in the code information display area 74. The conversion unit 152 can determine the current value of the leakage current for each of the plurality of sensitivity current set values Is.

For example, it is assumed that the ratio Ra is "50%" and the detection error of the detection unit 30 is "-5%". In this case, the conversion unit 152 calculates "52.5 mA" as the current value of the leakage current when the sensitivity current set value Is is "100 mA", and the leakage unit 152 when the sensitivity current set value Is is "300 mA". "157.5 mA" is calculated as the current value of the current. Further, the conversion unit 152 can calculate "262.5 mA" as the current value of the leakage current when the sensitivity current set value Is is "500 mA".

In the above-mentioned example, the example in which the sensitivity changeover switch 53 is provided in the circuit breaker 1 has been described, but the circuit breaker 1 may be configured not to provide the sensitivity changeover switch 53. In this case, in the sensitivity current set value display area 73, a character indicating one sensitivity current set value Is is displayed. FIG. 21 is a diagram showing an example of a characteristic display area when the circuit breaker according to the first embodiment is not provided with a sensitivity changeover switch. FIG. 22 is a diagram showing another example of the characteristic display area when the circuit breaker according to the first embodiment is not provided with the sensitivity changeover switch.

In the example shown in FIG. 21, characters "30 mA" are arranged by printing or the like as the current value of the leakage current in the sensitivity current set value display area 73 of the characteristic display area 58. Here, it is assumed that the ratio Ra is "50%" and the sensitivity current set value display area 73 is in the state shown in FIG. In this case, the conversion unit 152 detects "30 mA" as the sensitivity current set value Is based on the image information output from the image pickup unit 110. Since the conversion unit 152 has a ratio Ra of "50%" and a sensitivity current set value Is of "30 mA", it can determine that the current value of the leakage current is "15 mA".

In the characteristic display area 58 shown in FIG. 22, a code information display area 75 for displaying two-dimensional code information in which the sensitivity current set value Is, characteristic accuracy, specifications, etc. of the circuit breaker 1 are two-dimensionally coded is arranged by printing or the like. Has been done. The conversion unit 152 can determine the sensitivity current set value Is of the circuit breaker 1 and the detection error of the detection unit 30 based on the information of the image in the code information display area 75.

Here, it is assumed that the information of the sensitivity current set value Is included in the code information display area 75 indicates 30 mA, and the information of the detection error of the detection unit 30 indicates “+ 10%”. Further, it is assumed that the ratio Ra is "50%". In this case, the conversion unit 152 determines that the sensitivity current setting value Is is "30 mA" and the detection error of the detection unit 30 is "-5%" based on the information of the image in the sensitivity current set value display area 73. judge. Then, the conversion unit 152 determines that the current value of the leakage current is "13.5 mA" by multiplying "15 mA" by "0.90".

The conversion unit 152 can acquire the specification information of the circuit breaker 1 by converting the two-dimensional code information included in the code information display area 75 into character information.

Returning to FIG. 16, the description of the processing unit 150 of the information processing apparatus 100 will be continued. The display processing unit 153 of the processing unit 150 displays the current value of the leakage current obtained by the conversion unit 152 on the display unit 120. FIG. 23 is a diagram showing an example of a display screen of the display unit of the information processing apparatus according to the first embodiment. FIG. 24 is a diagram showing another example of the display screen of the display unit of the information processing apparatus according to the first embodiment. In FIG. 24, the “set value” indicates the rated sensitivity current value, and the “measured value” indicates the current value of the leakage current detected by the detection unit 30 of the circuit breaker 1.

As shown in FIG. 23, the display screen 160 displays the serial number of the circuit breaker 1, the current value of the leakage current, and the rated sensitivity current value. The rated sensitivity current value is the sensitivity current set value Is. In the display screen 160 shown in FIG. 23, it is shown that the current value of the leakage current is “50 mA” and the sensitivity current set value Is is “100 mA”.

Further, on the display screen 160 shown in FIG. 24, the serial number of the circuit breaker 1, the ratio Ra, and the current value of the leakage current with respect to each rated sensitivity current value are shown. Specifically, in the display screen 160 shown in FIG. 24, when the ratio Ra is "50%" and the sensitivity current set value Is is "100 mA", the leakage current current value is "50 mA". It is shown. Further, in the display screen 160 shown in FIG. 24, the leakage current when the sensitivity current set value Is is "300 mA" is "150 mA", and the leakage current is when the sensitivity current set value Is is "500 mA". It is shown that the current value of the current is "250 mA". The user of the information processing apparatus 100 can grasp the current value of the leakage current by confirming the position of the display screen 160 shown in FIG. 24 and the knob 53a of the sensitivity changeover switch 53 of the circuit breaker 1.

The conversion unit 152 determines the configuration of the characteristic display area 58 of the circuit breaker 1 based on the serial number of the circuit breaker 1, and based on the determination result, sets the blinking state of the light emitting diode 50 as the current value of the leakage current. Can be converted to. For example, in the conversion unit 152, whether the characteristic display area 58 of the circuit breaker 1 is in the state shown in FIG. 20 or in the state shown in FIG. 22 based on the serial number of the circuit breaker 1 specified by the two-dimensional code information. Can be determined.

Further, in the above-mentioned example, in addition to the light emitting diode 50, the sensitivity current set value display area 73, the code information display area 74, the code information display area 75, and the like can be imaged by one image pickup by the image pickup unit 110. However, the number of times of imaging by the imaging unit 110 may be 2 or more. For example, the processing unit 150 determines the current value of the leakage current from the captured image of the light emitting state of the light emitting diode 50 and the captured image of the sensitivity current set value display area 73, the code information display area 74, or the code information display area 75. You can also do it.

Subsequently, the processing by the processing unit 150 of the information processing apparatus 100 will be described with reference to the flowchart. FIG. 25 is a flowchart showing an example of processing by the processing unit of the information processing apparatus according to the first embodiment.

As shown in FIG. 25, the acquisition unit 151 of the processing unit 150 acquires moving image information from the image pickup unit 110 (step S31). The conversion unit 152 of the processing unit 150 determines the ratio Ra from the information of the moving image acquired by the acquisition unit 151 (step S32). Further, the conversion unit 152 determines the rated sensitivity set value from the information of the moving image acquired by the acquisition unit 151 (step S33). Further, the conversion unit 152 determines the detection error of the detection unit 30 from the information of the moving image acquired by the acquisition unit 151 (step S34).

The conversion unit 152 calculates the current value of the leakage current from the ratio Ra determined in step S32, the rated sensitivity set value determined in step S33, and the detection error of the detection unit 30 determined in step S34 (step S35). ). The display processing unit 153 of the processing unit 150 displays the current value of the leakage current calculated by the conversion unit 152 on the display unit 120 (step S36), and ends the processing shown in FIG. 25.

FIG. 26 is a diagram showing an example of the hardware configuration of the microcomputer of the circuit breaker according to the first embodiment. As shown in FIG. 26, the microcomputer 52 includes a computer including a processor 161, a memory 162, and an interface circuit 163.

The processor 161 and the memory 162 and the interface circuit 163 can send and receive data to and from each other by the bus 164. The AD converter 32, a part of the blinking control unit 60, and a part of the trip output unit 43 are realized by the interface circuit 163. The processor 161 executes the functions of the effective value calculation unit 33, the comparison unit 41, the sensitivity current value setting unit 42, the trip output unit 43, and the blinking control unit 60 by reading and executing the program stored in the memory 162. do. The processor 161 is an example of a processing circuit, and includes one or more of a CPU (Central Processing Unit), a DSP (Digital Signal Processer), and a system LSI (Large Scale Integration).

The memory 162 includes one or more of RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), and EEPROM (registered trademark) (Electrically Erasable Programmable Read Only Memory). include. The memory 162 also includes a recording medium on which a computer-readable program is recorded. Such recording media include one or more of non-volatile or volatile semiconductor memories, magnetic disks, flexible memories, optical discs, compact discs, and DVDs (Digital Versatile Discs). The microcomputer 52 may include integrated circuits such as an ASIC (Application Specific Integrated Circuit) and an FPGA (Field Programmable Gate Array).

Further, the processing unit 150 of the information processing apparatus 100 has a hardware configuration similar to the hardware configuration shown in FIG. 26. A part of the acquisition unit 151 and a part of the display processing unit 153 are realized by the interface circuit 163. The processor 161 executes the functions of the acquisition unit 151, the conversion unit 152, and the display processing unit 153 by reading and executing the program stored in the memory 162. The processing unit 150 may include an integrated circuit such as an ASIC and an FPGA.

Further, in the first embodiment, the case where the circuit breaker 1 has one light emitting diode 50 has been described, but this is not necessarily limited to the case where the light emitting diode 50 is a single component. For example, when the light emitting diode 50 blinks based on the ratio Ra, the two light emitting diodes may be made to blink as a component. That is, even if two light emitting diodes are used as parts, the one light emitting diode 50 may function as a unit as a light emitting diode 50.

In the description of FIGS. 3 to 25, an example in which the circuit breaker 1 is an earth leakage circuit breaker has been described, but the circuit breaker 1 may be an overcurrent circuit breaker that does not detect an earth leakage. FIG. 27 is a block diagram showing another example of the specific configuration of the circuit breaker according to the first embodiment. In the following, components having the same function as the circuit breaker 1 shown in FIG. 10 will be designated by the same reference numerals and description thereof will be omitted, and the differences from the circuit breaker 1 shown in FIG. 10 will be mainly described.

The circuit breaker 1 shown in FIG. 27 differs from the circuit breaker 1 shown in FIG. 10 in that it includes current transformers 31a, 31b, 31c and a rectifier circuit 34 in place of the zero-phase current transformer 31. The current transformers 31a, 31b, and 31c output a current signal that is directly proportional to the three-phase energization current. For example, the current transformer 31a outputs a current signal directly proportional to the current-carrying current of the U phase, the current transformer 31b outputs a current signal directly proportional to the current-carrying current of the V phase, and the current transformer 31c outputs a current signal directly proportional to the current-carrying current of the V phase. Outputs a current signal that is directly proportional to the energizing current of.

The rectifier circuit 34 has, for example, a plurality of diodes and a plurality of resistors, and converts an analog current signal from the current transformers 31a, 31b, 31c into an analog voltage signal. The AD converter 32 converts the analog voltage signal from the rectifier circuit 34 into a digital signal. The effective value calculation unit 33 calculates the effective value Ib of the energizing current of the electric circuit 4 based on the digital signal output from the AD converter 32.

The comparison unit 41 compares the effective value Ib of the energization current calculated by the effective value calculation unit 33 with the sensitivity current set value Is. The trip output unit 43 outputs a trip signal to the trigger circuit 44 when the effective value Ib of the energizing current is equal to or higher than the sensitivity current set value Is based on the comparison result by the comparison unit 41.

The blinking control unit 60 outputs a drive signal Sg that blinks the light emitting diode 50 based on the effective value Ib of the energizing current calculated by the effective value calculation unit 33. The method of generating the drive signal Sg based on the effective value Ib of the energizing current is the same as the method of generating the drive signal Sg based on the effective value Ia of the leakage current. That is, the blinking control unit 60 can output the drive signal Sg using the effective value Ib of the energizing current by the same processing as in the case of the effective value Ia of the leakage current. The hardware configuration of the circuit breaker 1 shown in FIG. 27 is the same as the hardware configuration shown in FIG. 26.

The processing unit 150 of the information processing apparatus 100 displays the current value of the energizing current of the electric circuit 4 on the display unit 120 in characters based on the image obtained by capturing the blinking state of the light emitting diode 50 shown in FIG. 27 by the image pickup unit 110. The process of displaying can be performed. The characteristic display area of the circuit breaker 1 shown in FIG. 27 is, for example, the same as the characteristic display area 58 of the circuit breaker 1 described with reference to FIGS. 19 to 22. The method of obtaining the current value of the energization current of the electric circuit 4 from the image obtained by the image pickup unit 110 is the same as the method of obtaining the current value of the leakage current of the electric circuit 4 from the image obtained by the image pickup unit 110. ..

As described above, the circuit breaker 1 according to the first embodiment includes an opening / closing mechanism unit 10, a tripping device 20, a detection unit 30, a drive unit 40, a main body case 70, a light emitting diode 50, and blinking control. A unit 60 is provided. The opening / closing mechanism portion 10 opens / closes the electric path 4. The tripping device 20 operates the opening / closing mechanism portion 10. The detection unit 30 detects the current value of the leakage current or the energizing current of the electric circuit 4. The drive unit 40 drives the tripping device 20 based on the detection result of the detection unit 30. The main body case 70 covers the opening / closing mechanism unit 10, the tripping device 20, the detection unit 30, and the drive unit 40. The light emitting diode 50 is arranged at a position visible from the outside of the main body case 70. The blinking control unit 60 blinks the light emitting diode 50 based on the current value detected by the detection unit 30. As a result, the space for displaying the detected value of the leakage current or the energizing current can be reduced.

Further, the blinking control unit 60 emits light based on the ratio calculation unit 63 for calculating the ratio Ra of the current value detected by the detection unit 30 to the sensitivity current set value Is and the ratio Ra calculated by the ratio calculation unit 63. A drive unit 64 for blinking the diode 50 is provided. Thereby, by blinking the light emitting diode 50 based on the ratio Ra, the light emitting diode 50 can be blinked in the same format even when the sensitivity current set value Is is different.

Further, the blinking control unit 60 determines whether or not the storage unit 61 for storing the user set value Set set by the user and the current value detected by the detection unit 30 are equal to or higher than the user set value Iset. A unit 62 is provided. The drive unit 40 is a light emitting diode based on the ratio Ra calculated by the ratio calculation unit 63 when the current value detected by the detection unit 30 is determined by the state determination unit 62 to be equal to or higher than the user set value Iset. Make 50 blink. As a result, the light emitting diode 50 blinks only when the current value detected by the detection unit 30 is equal to or higher than the user set value Iset. Therefore, when the leakage current or the energization current is so small that it is not necessary to check it, the blinking of the light emitting diode 50 can be suppressed. Further, when the current value detected by the detection unit 30 is equal to or higher than the user set value Iset, the light emitting diode 50 blinks to inform the user that a leakage current or an energization current equal to or higher than the user set value Iset has occurred. It can also function as an alarm.

Further, the blinking control unit 60 blinks the light emitting diode 50 by setting the ratio Ra, which is the ratio of the sensitivity current set value Is and the current value, to the ratio of the lighting time and the extinguishing time of the light emitting diode 50. This makes it possible to intuitively visually grasp the magnitude of the leakage current or the energizing current with respect to the sensitivity current set value Is.

Further, the blinking control unit 60 does not blink the light emitting diode 50 in a state where the electric circuit 4 is cut off by the operation of the opening / closing mechanism unit 10 by the tripping device 20. As a result, the power consumption of the circuit breaker 1 when the circuit breaker 1 is off can be reduced.

Further, the circuit breaker system 200 includes a circuit breaker 1 and an information processing device 100. The information processing device 100 includes an image pickup unit 110, a conversion unit 152, and a display processing unit 153. The conversion unit 152 converts the blinking state of the light emitting diode 50 into the current value of the leakage current or the current value of the energizing current based on the image pickup result of the light emitting diode 50 by the image pickup unit 110. The display processing unit 153 displays the current value converted by the conversion unit 152 on the display unit 120. This makes it possible to easily grasp the current value of the leakage current or the current value of the energizing current.

Further, a character indicating the sensitivity current set value Is or a two-dimensional code including the coded information of the sensitivity current set value Is is attached to the specific portion of the main body case 70. The specific portion of the main body case 70 is, for example, a region 76 shown in FIG. 19 or a region 77 shown in FIG. 20. When a specific portion of the main body case 70 is imaged by the image pickup unit 110, the conversion unit 152 determines the sensitivity current set value Is based on the result of one image pickup by the image pickup unit 110. The conversion unit 152 converts the blinking state of the light emitting diode 50 into the current value of the leakage current or the current value of the energizing current based on the determined sensitivity current set value Is. Thereby, the blinking state of the light emitting diode 50 can be converted into the current value of the leakage current or the current value of the energizing current only by imaging a specific portion of the main body case 70. Therefore, the user of the information processing apparatus 100 can save the trouble of inputting the sensitivity current set value Is into the information processing apparatus 100, for example.

Further, the specific portion of the main body case 70 is arranged at a position where the image pickup unit 110 can simultaneously take an image of the light emitting diode 50. As a result, the user of the information processing apparatus 100 does not need to take images separately at different positions, and the user of the information processing apparatus 100 can save time and effort.

Further, in a specific part of the main body case 70, a character indicating the sensitivity current set value Is is arranged corresponding to each of a plurality of positions where the knob 53a of the sensitivity changeover switch 53 and the knob 53a of the sensitivity changeover switch 53 can be moved. Has been done. When a specific portion is imaged by the image pickup unit 110, the conversion unit 152 determines the sensitivity current set value Is based on the position of the knob 53a of the sensitivity changeover switch 53. As a result, even when the sensitivity changeover switch 53 is present, the current value of the leakage current or the energizing current can be accurately grasped.

Further, the two-dimensional code contains coded information indicating the characteristic accuracy of the circuit breaker 1 measured at the time of the shipping test of the circuit breaker 1. When a specific portion is imaged by the imaging unit 110, the conversion unit 152 determines the characteristic accuracy of the circuit breaker 1 based on the information indicating the coded characteristic accuracy, and performs error correction based on the determined characteristic accuracy. Calculate the current value of the leakage current or the current value of the energizing current. This makes it possible to accurately grasp the current value of the leakage current or the energizing current.

The configuration shown in the above embodiments shows an example of the contents of the present invention, can be combined with another known technique, and is one of the configurations as long as it does not deviate from the gist of the present invention. It is also possible to omit or change the part.

1 breaker, 2 power supply, 3 load, 4 electric circuit, 10 open / close mechanism, 11 fixed contact, 12 movable contact, 13 handle, 14 power supply side connection terminal, 15 load side connection terminal, 16 trip bar, 17 overcurrent tripping Equipment, 20 tripping device, 21 actuator, 22 tripping relay, 30 detector, 31 zero-phase current transformer, 31a, 31b, 31c current transformer, 32 AD converter, 33 effective value calculation unit, 34 rectifier circuit, 40, 64 Drive unit, 41 Comparison unit, 42 Sensitivity current value setting unit, 43 Trip output unit, 44 Trigger circuit, 50 Light emitting diode, 51 Resistance, 52 Microcomputer, 53 Sensitivity changeover switch, 53a, 54a knob, 54 Operating time Changeover switch, 55 test button, 56 leakage display button, 57,130 input unit, 58 characteristic display area, 60 blinking control unit, 61 storage unit, 62 status determination unit, 63 ratio calculation unit, 70 main unit case, 71 main unit base, 72 body cover, 72a, 72b, 72c, 82a, 82b opening, 73 sensitivity current setting value display area, 74,75 code information display area, 76,77 area, 80 leakage detection circuit unit, 81 unit base, 82 unit cover, 83 unit case, 84 electronic circuit unit, 85 printed wiring board, 90 power supply circuit, 100 information processing device, 110 image pickup unit, 120 display unit, 140 communication unit, 150 processing unit, 151 acquisition unit, 152 conversion unit, 153 display processing Circuit, 160 display screen, 200 breaker system, Ia effective value, Set user set value, Is sensitivity current set value, Ra ratio.

Claims (11)

An opening / closing mechanism that opens and closes the electric circuit,
A tripping device that operates the opening / closing mechanism, and
A detector that detects the current value of the leakage current or energization current of the electric circuit, and
Based on the detection result of the detection unit, the drive unit that drives the tripping device and the drive unit
A main body case that covers the opening / closing mechanism unit, the tripping device, the detection unit, and the drive unit.
One light emitting diode arranged in a position visible from the outside of the main body case,
A blinking control unit for blinking the one light emitting diode based on the current value detected by the detection unit is provided .
The blinking control unit
A ratio calculation unit that calculates the ratio of the current value detected by the detection unit to the sensitivity current set value, and
A drive unit for blinking the one light emitting diode based on the ratio calculated by the ratio calculation unit is provided.
A circuit breaker characterized by that. The blinking control unit
A storage unit that stores user setting values set by the user,
A state determination unit for determining whether or not the current value detected by the detection unit is equal to or higher than the user set value is provided.
The drive unit
When the state determination unit determines that the current value detected by the detection unit is equal to or higher than the user set value, the one light emitting diode blinks based on the ratio calculated by the ratio calculation unit. The circuit breaker according to claim 1 . The blinking control unit
The invention according to claim 1 or 2 , wherein the one light emitting diode is blinked by setting the ratio of the sensitivity current set value to the current value as the ratio of the lighting time and the extinguishing time of the one light emitting diode. Breaker. The blinking control unit
The circuit breaker according to any one of claims 1 to 3 , wherein the one light emitting diode does not blink when the electric circuit is cut off by the operation of the opening / closing mechanism portion by the tripping device. .. The circuit breaker according to any one of claims 1 to 4 .
Equipped with an information processing device,
The information processing device is
Image pickup unit and
A conversion unit that converts the blinking state of the one light emitting diode into the current value of the leakage current or the current value of the energizing current based on the image pickup result of the one light emitting diode by the imaging unit.
A circuit breaker system including a display processing unit that displays a current value converted by the conversion unit on the display unit. The circuit breaker according to any one of claims 1 to 3 and
Equipped with an information processing device,
The information processing device is
Imaging unit and
A conversion unit that converts the blinking state of the one light emitting diode into the current value of the leakage current or the current value of the energizing current based on the image pickup result of the one light emitting diode by the imaging unit.
A display processing unit that displays the current value converted by the conversion unit on the display unit is provided.
A character indicating the sensitivity current setting value or a two-dimensional code including coded information of the sensitivity current setting value is attached to the specific portion of the main body case.
The conversion unit
When the specific portion is imaged by the image pickup unit, the sensitivity current set value is determined based on the image pickup result by the image pickup unit, and the one light emitting diode blinks based on the determined sensitivity current set value. A circuit breaker system comprising converting a state into a current value of the leakage current or a current value of the energizing current. The circuit breaker system according to claim 6 , wherein the specific portion is arranged by the imaging unit at a position capable of imaging at the same time as the one light emitting diode. In the specific portion, a knob of the sensitivity changeover switch and a character indicating a sensitivity current set value corresponding to each of a plurality of positions where the knob can be moved are arranged.
The conversion unit
The circuit breaker system according to claim 7 , wherein when the specific portion is imaged by the imaging unit, the sensitivity current set value is determined based on the position of the knob of the sensitivity changeover switch. The two-dimensional code contains coded information indicating the characteristic accuracy of the circuit breaker measured at the time of the shipping test of the circuit breaker.
The conversion unit
When the specific portion is imaged by the imaging unit, the leakage is determined by determining the characteristic accuracy of the circuit breaker based on the information indicating the coded characteristic accuracy, and performing error correction based on the determined characteristic accuracy. The circuit breaker system according to any one of claims 6 to 8 , wherein the current value of the current or the current value of the energizing current is calculated. It is an information processing method performed by a computer.
Acquires the information of the moving image captured by the imaging unit in the region including the one light emitting diode of the circuit breaker that blinks one light emitting diode based on the current value of the leakage current or the energizing current of the electric circuit detected by the detection unit. To get the steps and
A conversion step of converting the blinking state of the one light emitting diode into the current value of the leakage current or the current value of the energizing current based on the information of the moving image acquired in the acquisition step.
An information processing method comprising:, a display step displaying a current value converted by the conversion step. Acquires the information of the moving image captured by the imaging unit in the region including the one light emitting diode of the circuit breaker that blinks one light emitting diode based on the current value of the leakage current or the energizing current of the electric circuit detected by the detection unit. To get the steps and
A conversion step of converting the blinking state of the one light emitting diode into the current value of the leakage current or the current value of the energizing current based on the information of the moving image acquired in the acquisition step.
An information processing program characterized by having a computer execute a display step that displays a current value converted by the conversion step.

Images