TWI640777B - Electric meter apparatus with light-blinking function - Google Patents

Abstract

An electric meter device with a function of light flicker includes a positive-end probe, a negative-end probe, a resistance measurement circuit, a voltage supply unit, a micro-control unit, and a light-flicker prompting unit. The resistance measurement circuit measures an external resistance through the positive-end probe and the negative-end probe to obtain a resistance value of the external resistance; the resistance measurement circuit notifies the micro-control unit of the resistance value of the external resistance; if the external resistance If the resistance value of the resistor is less than or equal to a preset value, the micro-control unit controls the light flashing prompting unit to emit light, to illuminate or to flash, so as to remind the user.

Description

Electric meter device with light flicker function

The invention relates to an electric meter device, in particular to an electric meter device having a light flicker function.

Both electricity meters and clamp meters are commonly used electronic measuring devices; the electricity meter does not require electrical contact to measure the current in a conductor (such as a wire).

The meter and tick meter have a short-circuit test function to test the short circuit; when the short circuit is measured by the related technology meter, the related technology meter will generate a sound to remind the user. However, in a noisy environment, such as in a factory, it is sometimes difficult for users to hear the sound produced by related technology electric meters.

In order to improve the shortcomings of the conventional techniques described above, a first object of the present invention is to provide an electric meter device having a light flicker function.

In order to improve the shortcomings of the conventional techniques, a second object of the present invention is to provide an electric meter device having a light flicker function.

In order to improve the disadvantages of the above-mentioned conventional technology, a third object of the present invention is to provide an electric meter device having a light flicker function.

In order to achieve the above-mentioned first object of the present invention, the electric meter device with a light blinking function of the present invention is applied to an external resistor. The electric meter device with a light blinking function includes: a positive terminal probe, one end of the positive terminal probe Connected to one end of the external resistance; a negative-end probe, one end of the negative-end probe is connected to the other end of the external resistance, and the other end of the negative-end probe is grounded; a resistance-measuring circuit, the resistance-measuring circuit is connected To the other end of the positive-end probe; a voltage supply unit connected to the resistance measurement circuit; a micro control unit connected to the resistance measurement circuit; and a light flashing prompt unit, the A light flashing prompt unit is connected to the micro control unit. The resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe to obtain a resistance value of the external resistance; the resistance measurement circuit notifies the micro-control unit of the resistance value of the external resistance; a measurement Time is defined as the duration that the resistance measurement circuit measures the external resistance through the positive-side probe and the negative-side probe, and the resistance value of the external resistance is less than or equal to a preset value; the micro-control unit calculates and judges The measurement time. Wherein if the measurement time is shorter than a preset time and the light flicker prompt unit is off, the micro control unit controls the light flicker prompt unit to emit light during the preset time; if the measurement time is shorter than the preset time and If the light flicker prompting unit is illuminated, the micro control unit turns off the light flicker prompting unit within the preset time; if the measurement time is not less than the preset time, the micro control unit controls the light flicker prompting unit to blink Ground glow.

Furthermore, the electric meter device with the light flicker function described above further includes a display, and the display is connected to the micro control unit. The light flashing prompt unit is a backlight module.

Moreover, as described above, the electric meter device having a light blinking function, wherein the light blinking prompting unit is a light emitting diode.

Furthermore, as described above, the electric meter device with a light flicker function, wherein the resistance measurement circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature coefficient thermal sensor A resistance unit, one end of the PTC thermistor unit is connected to the other end of the first voltage dividing resistor, and the other end of the PTC thermistor unit is connected to the The other end; a measurement terminal resistance, one end of which is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source. The comparator includes: a first input terminal, the first input terminal of the comparator is connected to the other end of the resistance of the measuring terminal; a second input terminal, the second input terminal of the comparator is connected to the reference A voltage source; and an output terminal, the output terminal of the comparator is connected to the micro control unit. Wherein, if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit that the resistance value of the external resistor is less than or equal to the preset value.

In order to achieve the above-mentioned second object of the present invention, the electric meter device with a light blinking function of the present invention is applied to an external resistor. The electric meter device with a light blinking function includes: a positive terminal probe, one end of the positive terminal probe Connected to one end of the external resistance; a negative-end probe, one end of the negative-end probe is connected to the other end of the external resistance, and the other end of the negative-end probe is grounded; a resistance-measuring circuit, the resistance-measuring circuit is connected To the other end of the positive-end probe; a voltage supply unit connected to the resistance measurement circuit; a micro control unit connected to the resistance measurement circuit; a light flashing prompt unit, the light The flashing prompting unit is connected to the micro control unit; and a sound prompting unit is connected to the micro control unit. The resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe to obtain a resistance value of the external resistance; the resistance measurement circuit notifies the micro-control unit of the resistance value of the external resistance; a measurement Time is defined as the duration that the resistance measurement circuit measures the external resistance through the positive-side probe and the negative-side probe, and the resistance value of the external resistance is less than or equal to a preset value; the micro-control unit calculates and judges The measurement time. Wherein if the measurement time is less than a preset time and the light flashing prompt unit is off, within the preset time, the micro control unit controls the light flashing prompt unit to emit light, and at the same time the micro control unit controls the sound prompt The unit emits a sound; if the measurement time is shorter than the preset time and the light flicker prompt unit is illuminated, the micro control unit turns off the light flicker prompt unit within the preset time, and at the same time the micro control unit controls the sound The prompt unit sounds; if the measurement time is not less than the preset time Meanwhile, the micro control unit controls the light flashing prompting unit to emit light flashing, and at the same time, the micro control unit controls the sound prompting unit to emit a sound.

Furthermore, the electric meter device with the light flicker function described above further includes a display, and the display is connected to the micro control unit. The light flashing prompt unit is a backlight module.

Moreover, as described above, the electric meter device having a light blinking function, wherein the light blinking prompting unit is a light emitting diode.

Furthermore, as described above for the electric meter device with a light flicker function, the sound prompting unit is a buzzer.

Furthermore, as described above, the electric meter device with a light flicker function, wherein the resistance measurement circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature coefficient thermal sensor A resistance unit, one end of the positive temperature coefficient thermistor unit is connected to the other end of the first voltage-dividing resistor, and the other end of the positive temperature coefficient thermistor unit is connected to the other end of the positive-end probe; a measuring end Resistance, one end of the measuring terminal resistance is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source. The comparator includes: a first input terminal, the first input terminal of the comparator is connected to the other end of the resistance of the measuring terminal; a second input terminal, the second input terminal of the comparator is connected to the reference A voltage source; and an output terminal, the output terminal of the comparator is connected to the micro control unit. Wherein, if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit that the resistance value of the external resistor is less than or equal to the preset value.

In order to achieve the third object of the present invention, the electric meter device with light flicker function of the present invention is applied to an external resistor. The electric meter device with light flicker function includes: a positive terminal probe, one end of the positive terminal probe Connected to one end of the external resistance; a negative-end probe, one end of the negative-end probe is connected to the other end of the external resistance, and the other end of the negative-end probe is grounded; a resistance-measuring circuit, the resistance-measuring circuit is connected To the other end of the positive terminal probe; a voltage supply unit, the voltage supply unit Connected to the resistance measurement circuit; a micro control unit connected to the resistance measurement circuit; a backlight module connected to the micro control unit; and a sound prompt unit connected to the sound prompt unit To the micro control unit. The resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe to obtain a resistance value of the external resistance; the resistance measurement circuit notifies the micro-control unit of the resistance value of the external resistance; a measurement Time is defined as the duration that the resistance measurement circuit measures the external resistance through the positive-side probe and the negative-side probe, and the resistance value of the external resistance is less than or equal to a preset value; the micro-control unit calculates and judges The measurement time. If the measurement time is less than a preset time and the backlight module is off, the micro control unit controls the backlight module to emit light during the preset time, and at the same time, the micro control unit controls the sound prompt unit to emit Sound; if the measurement time is less than the preset time and the backlight module is illuminated, the micro control unit turns off the backlight module during the preset time, and at the same time the micro control unit controls the sound prompt unit to emit a sound ; If the measurement time is not less than the preset time, the micro control unit controls the backlight module to emit light flashing, and at the same time the micro control unit controls the sound prompting unit to emit a sound.

Furthermore, the electric meter device with the light flicker function described above further includes a display, and the display is connected to the micro control unit.

Furthermore, as described above for the electric meter device with a light flicker function, the sound prompting unit is a buzzer.

Furthermore, as described above, the electric meter device with a light flicker function, wherein the resistance measurement circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature coefficient thermal sensor A resistance unit, one end of the positive temperature coefficient thermistor unit is connected to the other end of the first voltage-dividing resistor, and the other end of the positive temperature coefficient thermistor unit is connected to the other end of the positive-end probe; a measuring end Resistance, one end of the measuring terminal resistance is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source. The comparator includes a first input terminal, and the first input terminal of the comparator is connected to another resistance of the measurement terminal. A second input terminal, the second input terminal of the comparator is connected to the reference voltage source; and an output terminal, the output terminal of the comparator is connected to the micro control unit. Wherein, if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit that the resistance value of the external resistor is less than or equal to the preset value.

The effect of the invention is that when the short circuit is measured by the meter, the backlight module or the light-emitting diode of the meter will flash to remind the user.

10‧‧‧ Electric meter device with light flicker function

20‧‧‧External resistance

102‧‧‧Positive Probe

104‧‧‧ Negative Probe

106‧‧‧ Resistance measurement circuit

108‧‧‧Voltage supply unit

110‧‧‧Microcontrol unit

112‧‧‧light flashing prompt unit

114‧‧‧ Display

116‧‧‧Voice reminder unit

118‧‧‧ backlight module

120‧‧‧The first voltage dividing resistor

122‧‧‧PTC Thermistor Unit

124‧‧‧Measuring terminal resistance

126‧‧‧ Comparator

128‧‧‧first input

130‧‧‧second input

132‧‧‧output

134‧‧‧Reference voltage source

136‧‧‧ Analog Digital Converter

S02 ~ 08‧‧‧step

T02 ~ 08‧‧‧step

U02 ~ 08‧‧‧step

V02 ~ 22‧‧‧step

FIG. 1 is a block diagram of a first embodiment of a meter device having a light blinking function according to the present invention.

FIG. 2 is a block diagram of a second embodiment of a meter device with a light blinking function according to the present invention.

FIG. 3 is a block diagram of a third embodiment of a meter device with a light blinking function according to the present invention.

FIG. 4 is a block diagram of a fourth embodiment of a meter device with a light blinking function according to the present invention.

FIG. 5 is a block diagram of a fifth embodiment of a meter device with a light blinking function according to the present invention.

FIG. 6 is a block diagram of a sixth embodiment of a meter device having a light blinking function according to the present invention.

FIG. 7 is a flowchart of a first embodiment of a measuring method of an electric meter device having a light flicker function to which the present invention is applied.

FIG. 8 is a flowchart of a second embodiment of a measuring method of an electric meter device having a light flicker function to which the present invention is applied.

FIG. 9 is a flowchart of a third embodiment of a measurement method for an electric meter device having a light flicker function to which the present invention is applied.

FIG. 10 is a flowchart of a method for light flickering of an electricity meter device.

For the detailed description and technical contents of the present invention, please refer to the following detailed description and accompanying drawings. The drawings and detailed description are only for illustration, and are not intended to limit the present invention.

Please refer to FIG. 1, which is a block diagram of a first embodiment of a meter device with a light flicker function according to the present invention. An electric meter device 10 with a light flicker function is applied to an external resistor 20. The electric meter device 10 with a light flicker function includes a positive terminal probe 102, a negative terminal probe 104, a resistance measurement circuit 106, and a voltage supply. The unit 108, a micro-control unit 110, a light blinking prompting unit 112, and a display 114. The resistance measurement circuit 106 includes a first voltage dividing resistor 120, a PTC thermistor unit 122, a measurement terminal resistance 124, a comparator 126, and a reference voltage source 134. The comparator 126 includes a first input terminal 128, a second input terminal 130 and an output terminal 132. Among them, PTC is an abbreviation of positive temperature coefficient.

One end of the positive-end probe 102 is connected to one end of the external resistance 20; one end of the negative-end probe 104 is connected to the other end of the external resistance 20; the other end of the negative-end probe 104 is grounded; the resistance measurement circuit 106 is connected to the other end of the positive terminal probe 102; the voltage supply unit 108 is connected to the resistance measurement circuit 106; the micro control unit 110 is connected to the resistance measurement circuit 106; the light flashing prompt unit 112 is connected to the micro control Unit 110; the display 114 is connected to the micro control unit 110; one end of the first voltage dividing resistor 120 is connected to the voltage supply unit 108; one end of the PTC thermistor unit 122 Connected to the other end of the first voltage dividing resistor 120; the other end of the PTC thermistor unit 122 is connected to the other end of the positive-end probe 102; and one end of the measurement-end resistance 124 is connected to the positive-end probe 102 The other end of the comparator 126 and the other end of the PTC thermistor unit 122; the first input terminal 128 of the comparator 126 is connected to the other end of the measurement resistance 124; the output terminal 132 of the comparator 126 is connected to the microcomputer The control unit 110; the reference voltage source 134 is connected to the second input terminal 130 of the comparator 126.

The resistance measurement circuit 106 measures the external resistance 20 through the positive terminal probe 102 and the negative terminal probe 104 to obtain a resistance value of the external resistance 20; the resistance measurement circuit 106 notifies the micro control unit 110 of the external resistance 20 The resistance value. In other words, if the resistance value of the external resistor 20 is less than or equal to a preset value, the comparator 126 notifies the micro control unit 110 that the resistance value of the external resistor 20 is less than or equal to the preset value. The preset value may be, for example, but the present invention is not limited to 0.1 ohms or 0.5 ohms; the electric meter device 10 having a light flicker function may be, for example, but the present invention is not limited to an electric meter or a clamp meter.

Please refer to FIG. 7, which is a flowchart of a first embodiment of a measuring method of an electric meter device having a light flicker function to which the present invention is applied. Furthermore, in a specific embodiment of the present invention, a measurement time is defined as the resistance measurement circuit 106 measures the external resistance 20 and the resistance value of the external resistance 20 through the positive terminal probe 102 and the negative terminal probe 104. A duration that is less than or equal to the preset value. As shown in FIG. 7, the measurement method of the electric meter device with the light flicker function to which the present invention is applied includes the following steps:

Step S02: The micro control unit 110 calculates and judges the measurement time. If the measurement time is less than a preset time (for example, 1 second) and the light flicker prompt unit 112 is off, the measurement method proceeds to step S04; if the measurement time is less than the preset time and the light flicker prompt unit 112 is light emission, the measurement method proceeds to step S06; if the measurement time is not less than the preset time, the measurement method proceeds to step S08.

Step S04: within the preset time, the micro control unit 110 controls the light flicker prompting unit 112 to emit light, and then ends the measurement method.

Step S06: within the preset time, the micro control unit 110 turns off the light blinking prompt unit 112, and then ends the measurement method.

Step S08: The micro-control unit 110 controls the light flicker prompting unit 112 to emit light until the measurement time ends, and then ends the measurement method.

For example, the time when the positive-end probe 102 and the negative-end probe 104 measure a short circuit is within 0.5 seconds and then the positive-end probe 102 and the negative-end probe 104 do not measure a short-circuit: if the light blinks, the unit is prompted. 112 is off, within 0.5 seconds, the micro control unit 110 controls the light flicker prompting unit 112 to emit light, and then the micro control unit 110 turns off the light flicker prompting unit 112; if the light flicker prompting unit 112 is lit, Then within 0.5 seconds, the micro control unit 110 turns off the light flicker prompting unit 112, and then the micro control unit 110 controls the light flicker prompting unit 112 to emit light.

For another example, the short-circuit time of the positive-end probe 102 and the negative-end probe 104 is within 5 seconds, and then the positive-end probe 102 and the negative-end probe 104 do not measure the short-circuit: if the light flashes, the prompt If the unit 112 is off, the micro control unit 110 controls the light flashing prompt unit 112 to emit light in the first second, and then within the second to fifth seconds, the micro control unit 110 controls the light flashing prompt unit 112. The light blinks, and then after 5 seconds, the micro control unit 110 turns off the light blinking prompting unit 112; if the light blinking prompting unit 112 is glowing, within 1 second, the micro control unit 110 turns off the light The flashing prompting unit 112, then within the second to fifth seconds, the micro-control unit 110 controls the light flashing prompting unit 112 to emit light flashing, and after the fifth second, the micro-control unit 110 controls the light flashing prompting unit 112 Glow.

The light flicker prompting unit 112 is a backlight module of the display 114 or a light emitting diode disposed on a surface of the electric meter device 10 having a light flicker function. The PTC thermistor unit 122 is a circuit current limiting protection unit. The voltage supply unit 108 can provide a DC voltage or an AC voltage.

Please refer to FIG. 2, which is a block diagram of a second embodiment of a meter device with a light flicker function according to the present invention. The description of the components shown in FIG. 2 is similar to that of FIG. 1 for brevity and will not be repeated here. Furthermore, the resistance measurement circuit 106 further includes an analog-to-digital converter 136; the analog-to-digital converter 136 is connected to the other end of the measurement-end resistor 124 and the micro-control unit 110. If the resistance value of the external resistor 20 is less than or equal to the preset value, the analog-to-digital converter 136 notifies the micro control unit 110 that the resistance value of the external resistor 20 is less than or equal to the preset value.

Please refer to FIG. 3, which is a block diagram of a third embodiment of an electric meter device having a light flicker function according to the present invention. The description of the components shown in FIG. 3 is similar to those in FIGS. 1 and 2, for the sake of brevity, and will not be repeated here. Furthermore, the meter device 10 with a light blinking function further includes a sound prompting unit 116; the sound prompting unit 116 is connected to the micro control unit 110. The sound prompting unit 116 is a buzzer.

Please refer to FIG. 8, which is a flowchart of a second embodiment of a method for measuring an electric meter device with a light flicker function according to the present invention. Furthermore, in a specific embodiment of the present invention, a measurement time is defined as the resistance measurement circuit 106 measures the external resistance 20 and the resistance value of the external resistance 20 through the positive terminal probe 102 and the negative terminal probe 104. A duration that is less than or equal to the preset value. As shown in FIG. 8, the measurement method of the electric meter device with the light flicker function to which the present invention is applied includes the following steps:

Step T02: The micro control unit 110 calculates and judges the measurement time. If the measurement time is less than a preset time (for example, 1 second) and the light flicker prompt unit 112 is off, the measurement method proceeds to step T04; if the measurement time is less than the preset time and the light flicker prompt unit If 112 is light emission, the measurement method proceeds to step T06; if the measurement time is not less than the preset time, the measurement method proceeds to step T08.

Step T04: within the preset time, the micro control unit 110 controls the light flashing prompt unit 112 to emit light, and at the same time, the micro control unit 110 controls the sound prompt unit 116 to emit a sound, and then ends the measurement method.

Step T06: within the preset time, the micro control unit 110 turns off the light blinking prompt unit 112, and at the same time, the micro control unit 110 controls the sound prompt unit 116 to emit a sound, and then ends the measurement method.

Step T08: The micro control unit 110 controls the light blinking prompting unit 112 to emit light flashing, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound until the measurement time ends, and then ends the measurement method.

For example, the time when the positive-end probe 102 and the negative-end probe 104 measure a short circuit is within 0.5 seconds and then the positive-end probe 102 and the negative-end probe 104 do not measure a short-circuit: if the light blinks, the unit is prompted. 112 is off, within 0.5 seconds, the micro control unit 110 controls the light flashing prompt unit 112 to emit light, and at the same time, the micro control unit 110 controls the sound prompt unit 116 to emit a sound, and then the micro control unit 110 turns off the Light flicker prompting unit 112 and sound prompting unit 116; if the light flicker prompting unit 112 is illuminated, within 0.5 seconds, the micro control unit 110 turns off the light flicker prompting unit 112, and at the same time, the micro control unit 110 controls The sound prompting unit 116 emits a sound, and then the micro control unit 110 controls the light blinking prompting unit 112 to emit light and turn off the sound prompting unit 116.

For another example, the short-circuit time of the positive-end probe 102 and the negative-end probe 104 is within 5 seconds, and then the positive-end probe 102 and the negative-end probe 104 do not measure the short-circuit: if the light flashes, the prompt Unit 112 is off, within the first second, the micro control unit 110 controls the light flashing prompt unit 112 to emit light, and at the same time, the micro control unit 110 controls the sound prompt unit 116 to emit a sound, and then in the second to fifth Within seconds, the micro control unit 110 controls the light flashing prompting unit 112 to emit light flashing, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound, and then after 5 seconds, the micro control unit 110 turns off the Light blinking prompting unit 112 and the sound prompting unit 116; if the light blinking prompting unit 112 is illuminated, within 1 second, the micro control unit 110 turns off the light blinking prompting unit 112, and at the same time, the micro control unit 110 The sound prompting unit 116 is controlled to emit a sound, and then within the second to 5 seconds, the micro control unit 110 controls the light blinking prompting unit 112 to emit light flashing, and at the same time the micro control The unit 110 controls the sound prompting unit 116 to emit a sound, and then 5 seconds later, the micro control unit 110 controls the light blinking prompting unit 112 to emit light and turn off the sound prompting unit 116.

Please refer to FIG. 4, which is a block diagram of a fourth embodiment of a meter device with a light flicker function according to the present invention. The description of the components shown in FIG. 4 is similar to that of FIGS. 1 to 3 for brevity and will not be repeated here. If the resistance value of the external resistor 20 is less than or equal to the preset value, the analog-to-digital converter 136 notifies the micro control unit 110 that the resistance value of the external resistor 20 is less than or equal to the preset value.

Please refer to FIG. 5, which is a block diagram of a fifth embodiment of a meter device with a light flicker function according to the present invention. The description of the components shown in FIG. 5 is similar to that of FIGS. 1 to 4 for brevity and will not be repeated here. Furthermore, the meter device 10 with a light blinking function further includes a backlight module 118, which is connected to the micro-control unit 110.

Please refer to FIG. 9, which is a flowchart of a third embodiment of a method for measuring an electric meter device having a light flicker function according to the present invention. Furthermore, in a specific embodiment of the present invention, a measurement time is defined as the resistance measurement circuit 106 measures the external resistance 20 and the resistance value of the external resistance 20 through the positive terminal probe 102 and the negative terminal probe 104. A duration that is less than or equal to the preset value. As shown in FIG. 9, the measurement method of the electric meter device with the light flicker function to which the present invention is applied includes the following steps:

Step U02: The micro control unit 110 calculates and judges the measurement time. If the measurement time is less than a preset time (for example, 1 second) and the backlight module 118 is off, the measurement method proceeds to step U04; if the measurement time is less than the preset time and the backlight module 118 is If the light is emitted, the measurement method proceeds to step U06; if the measurement time is not less than the preset time, the measurement method proceeds to step U08.

Step U04: within the preset time, the micro control unit 110 controls the backlight module 118 to emit light, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound, and then ends the measurement method.

Step U06: within the preset time, the micro control unit 110 turns off the backlight module 118, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound, and then ends the measurement method.

Step U08: The micro control unit 110 controls the backlight module 118 to emit light flashing, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound until the measurement time ends, and then ends the measurement method.

For example, the time when the positive terminal probe 102 and the negative terminal probe 104 measure a short circuit is within 0.5 seconds and then the positive terminal probe 102 and the negative terminal probe 104 do not measure a short circuit: if the backlight module 118 If it is not lit, within 0.5 seconds, the micro control unit 110 controls the backlight module 118 to emit light, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound, and then the micro control unit 110 turns off the backlight mode. Group 118 and the sound prompting unit 116; if the backlight module 118 is illuminated, within 0.5 seconds, the micro control unit 110 turns off the backlight module 118, and at the same time the micro control unit 110 controls the sound prompting unit 116 After making a sound, the micro control unit 110 controls the backlight module 118 to emit light and turns off the sound prompting unit 116.

For another example, the time when the positive terminal probe 102 and the negative terminal probe 104 measure a short circuit is within 5 seconds, and then the positive terminal probe 102 and the negative terminal probe 104 do not measure a short circuit: if the backlight module If 118 is off, the micro control unit 110 controls the backlight module 118 to emit light in the first second, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound, and then in the second to fifth seconds The micro control unit 110 controls the backlight module 118 to emit light flashing, and at the same time, the micro control unit 110 controls the sound prompting unit 116 to emit a sound. Then, 5 seconds later, the micro control unit 110 turns off the backlight module. 118 and the sound prompting unit 116; if the backlight module 118 is illuminated, within 1 second, the micro control unit 110 turns off the backlight module 118, and at the same time the micro control unit 110 controls the sound prompting unit 116 Make a sound, and then within 2 to 5 seconds, the micro control unit 110 controls the backlight module 118 to blink The micro-control unit 110 controls the sound prompting unit 116 to emit a sound. At the same time, the micro-control unit 110 controls the backlight module 118 to emit light and turn off the sound prompting unit 116 after 5 seconds.

Please refer to FIG. 6, which is a block diagram of a sixth embodiment of a meter device with a light flicker function according to the present invention. The description of the components shown in FIG. 6 is similar to that of FIGS. 1 to 5 for brevity and will not be repeated here. If the resistance value of the external resistor 20 is less than or equal to the preset value, the analog-to-digital converter 136 notifies the micro control unit 110 that the resistance value of the external resistor 20 is less than or equal to the preset value.

Please refer to FIG. 10, which is a flowchart of a method for light flickering of an electricity meter device. FIG. 10 is a more detailed flowchart of FIGS. 7 to 9. A method for light flickering of a meter device includes the following steps:

Step V02: Does a meter device detect a short circuit? If yes, the method proceeds to step V04; if not, the method proceeds to step V18.

Step V04: Accumulate one continuous short-circuit time for which one of the short circuits is detected. The method then proceeds to step V06. Wherein, if one of the timers of the meter device receives an interrupt flag, the timer accumulates the continuous short-circuit time.

Step V06: Is the continuous on / off mechanism of one of the backlight modules of the meter device activated? If yes, the method proceeds to step V14; if not, the method proceeds to step V08. The continuous on / off mechanism is the continuous on / off of the backlight module.

Step V08: Determine an initial state of one of the backlight modules. If the initial state is on, the method proceeds to step V10; if the initial state is off, the method proceeds to step V12.

Step V10: Store the initial state as on, then turn off the backlight module, and activate the continuous on / off mechanism. The method then proceeds to step V14.

Step V12: Store the initial state as off, then turn on the backlight module, and activate the continuous on / off mechanism. The method then proceeds to step V14.

Step V14: Perform a continuous short-circuit time judgment mechanism; in the continuous short-circuit time judgment mechanism, determine whether the continuous short-circuit time is greater than or less than a backlight on-off period? If greater than The method proceeds to step V16; if it is smaller, the method ends, and then the method is restarted. The backlight on / off period is the time when one of the backlight modules is on and off; the backlight on / off period can be set to 128ms, 256ms, or 512ms.

Step V16: Reverse one of the backlight modules on or off (ie, if the backlight module is on, the backlight module is off; if the backlight module is off, the backlight module is on) And clear the continuous short-circuit time. Then end the method and restart the method. Step V18: Is the continuous on / off mechanism activated? If so, the method proceeds to step V20; if not, the method ends and the method is restarted.

Step V20: Turn off the continuous on / off mechanism. The method then proceeds to step V22.

Step V22: Restore the initial state and clear the continuous short-circuit time. Then end the method and restart the method.

The effect of the invention is that when the short circuit is measured by the meter, the backlight module or the light-emitting diode of the meter will flash to remind the user.

However, the above are only preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited, that is, all equivalent changes and modifications made in accordance with the scope of patent application of the present invention shall still be covered by the patent of the present invention. The scope intends to protect the scope. The present invention may have various other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications are all It should belong to the protection scope of the claims attached to the present invention. In summary, when the present invention is known to have industrial applicability, novelty, and progress, and the structure of the present invention has not been seen in similar products and public use, it fully meets the requirements for the application of invention patents, and is filed in accordance with the Patent Law.

Claims (6)

An electric meter device with a light flicker function is applied to an external resistor. The electric meter device with a light flicker function includes: a positive terminal probe, one end of which is connected to one end of the external resistor; a negative terminal A probe, one end of the negative-end probe is connected to the other end of the external resistor, and the other end of the negative-end probe is grounded; a resistance measuring circuit, the resistance-measuring circuit is connected to the other end of the positive-end probe; A voltage supply unit connected to the resistance measurement circuit; a micro control unit connected to the resistance measurement circuit; a light flashing prompt unit connected to the micro control unit; and A display connected to the micro control unit, wherein the resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe to obtain a resistance value of the external resistance; the resistance measurement circuit notifies the micro-controller The resistance value of the external resistance of the control unit; a measurement time is defined as the resistance measurement circuit measures the external resistance through the positive terminal probe and the negative terminal probe And the resistance value of the external resistor is less than or equal to a preset duration; the micro-control unit calculates and judges the measurement time; wherein if the measurement time is less than a preset time and the light blinking prompt unit is not On, within the preset time, the micro control unit controls the light flicker prompt unit to emit light; if the measurement time is shorter than the preset time and the light flicker prompt unit is illuminated, within the preset time, the micro The control unit turns off the light blinking prompting unit; if the measurement time is not less than the preset time, the micro control unit controls the light blinking prompting unit to blink light; wherein the light blinking reminding unit is a backlight module or a light emitting unit Diode. The electric meter device with a light flicker function according to item 1 of the scope of patent application, wherein the resistance measuring circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature A coefficient thermistor unit, one end of the positive temperature coefficient thermistor unit is connected to the other end of the first voltage dividing resistor, and the other end of the positive temperature coefficient thermistor unit is connected to the other end of the positive-end probe; A measurement terminal resistance, one end of which is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source, wherein the comparator includes: A first input terminal, the first input terminal of the comparator is connected to the other end of the resistance of the measuring terminal; a second input terminal, the second input terminal of the comparator is connected to the reference voltage source; and an output Terminal, the output terminal of the comparator is connected to the micro control unit, wherein if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit of the external resistance The resistance value is less than or equal to the preset value. An electric meter device with a light flicker function is applied to an external resistor. The electric meter device with a light flicker function includes: a positive terminal probe, one end of which is connected to one end of the external resistor; a negative terminal A probe, one end of the negative-end probe is connected to the other end of the external resistor, and the other end of the negative-end probe is grounded; a resistance measuring circuit, the resistance-measuring circuit is connected to the other end of the positive-end probe; A voltage supply unit connected to the resistance measurement circuit; a micro-control unit connected to the resistance measurement circuit; a light flashing prompt unit connected to the micro-control unit; a A sound prompting unit connected to the micro control unit; and a display connected to the micro control unit, wherein the resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe to Obtaining a resistance value of the external resistance; the resistance measurement circuit notifies the micro control unit of the resistance value of the external resistance; a measurement time is defined as The resistance measurement circuit measures the external resistance through the positive-end probe and the negative-end probe, and the resistance value of the external resistance is less than or equal to a preset duration; the micro-control unit calculates and judges the measurement time; Wherein if the measurement time is less than a preset time and the light flashing prompt unit is off, within the preset time, the micro control unit controls the light flashing prompt unit to emit light, and at the same time the micro control unit controls the sound prompt The unit emits a sound; if the measurement time is shorter than the preset time and the light flicker prompt unit is illuminated, the micro control unit turns off the light flicker prompt unit within the preset time, and at the same time the micro control unit controls the sound The prompting unit emits a sound; if the measurement time is not less than the preset time, the micro control unit controls the light blinking prompting unit to emit light flashing, and at the same time the micro control unit controls the sound prompting unit to emit a sound; wherein the light blinks to prompt The unit is a backlight module or a light-emitting diode; the sound prompt unit is a buzzer. The electric meter device with a light flicker function according to item 3 of the scope of patent application, wherein the resistance measuring circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature A coefficient thermistor unit, one end of the positive temperature coefficient thermistor unit is connected to the other end of the first voltage dividing resistor, and the other end of the positive temperature coefficient thermistor unit is connected to the other end of the positive-end probe; A measurement terminal resistance, one end of which is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source, wherein the comparator includes: A first input terminal, the first input terminal of the comparator is connected to the other end of the resistance of the measuring terminal; a second input terminal, the second input terminal of the comparator is connected to the reference voltage source; and an output Terminal, the output terminal of the comparator is connected to the micro control unit, wherein if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit of the external resistance The resistance value is less than or equal to the preset value. An electric meter device with a light flicker function is applied to an external resistor. The electric meter device with a light flicker function includes: a positive terminal probe, one end of which is connected to one end of the external resistor; a negative terminal A probe, one end of the negative-end probe is connected to the other end of the external resistor, and the other end of the negative-end probe is grounded; a resistance measuring circuit, the resistance-measuring circuit is connected to the other end of the positive-end probe; A voltage supply unit, the voltage supply unit is connected to the resistance measurement circuit; a micro control unit, the micro control unit is connected to the resistance measurement circuit; a backlight module, the backlight module is connected to the micro control unit; an audio prompt A unit, the sound prompting unit is connected to the micro control unit; and a display, the display is connected to the micro control unit, wherein the resistance measuring circuit measures the external resistance through the positive terminal probe and the negative terminal probe to obtain the A resistance value of an external resistance; the resistance measurement circuit notifies the micro control unit of the resistance value of the external resistance; a measurement time is defined as the resistance measurement circuit Measure the external resistance through the positive-end probe and the negative-end probe, and the resistance value of the external resistance is less than or equal to a preset duration; the micro-control unit calculates and judges the measurement time; if the If the measurement time is less than a preset time and the backlight module is off, the micro control unit controls the backlight module to emit light during the preset time, and at the same time, the micro control unit controls the sound prompting unit to make a sound; if If the measurement time is shorter than the preset time and the backlight module is illuminated, the micro control unit turns off the backlight module during the preset time, and at the same time, the micro control unit controls the sound prompting unit to emit a sound; if the The measurement time is not less than the preset time, the micro control unit controls the backlight module to emit light flashing, and at the same time, the micro control unit controls the sound prompting unit to emit a sound; wherein the sound prompting unit is a buzzer. The electric meter device with light flicker function according to item 5 of the scope of patent application, wherein the resistance measuring circuit includes: a first voltage dividing resistor, one end of the first voltage dividing resistor is connected to the voltage supply unit; a positive temperature A coefficient thermistor unit, one end of the positive temperature coefficient thermistor unit is connected to the other end of the first voltage dividing resistor, and the other end of the positive temperature coefficient thermistor unit is connected to the other end of the positive-end probe; A measurement terminal resistance, one end of which is connected to the other end of the positive-end probe and the other end of the positive temperature coefficient thermistor unit; a comparator; and a reference voltage source, wherein the comparator includes: A first input terminal, the first input terminal of the comparator is connected to the other end of the resistance of the measuring terminal; a second input terminal, the second input terminal of the comparator is connected to the reference voltage source; and an output Terminal, the output terminal of the comparator is connected to the micro control unit, wherein if the resistance value of the external resistor is less than or equal to the preset value, the comparator notifies the micro control unit of the external resistance The resistance value is less than or equal to the preset value.