KR20230001649A - Distance measuring apparatus for improving power consumption - Google Patents

Abstract

The present invention relates to a distance measuring device with improved power consumption, wherein when a section change is imminent, a GPS module wakes up to measure distance in a short cycle, and after the section is changed, power consumption can be minimized by waking up the GPS module to measure the distance in a long cycle. The distance measuring device with improved power consumption is a terminal carried by a user, and includes a first timer, a second timer, a GPS module, a controller, and a battery.

Description

Distance measuring apparatus for improving power consumption

The present invention relates to a distance measurement technology, and more particularly to a distance measurement device with improved power consumption.

In order to solve the disadvantages of the existing button-type GPS golf rangefinders, which require the use of hands to measure distance during golf play, Korean Patent Publication No. 10-2018-0044731 (2018.05.03), etc. , proposed a GPS golf distance measurement technology that calculates the golf distance from the current location to the corresponding hole.

However, since power is always supplied to the GPS module that consumes a lot of power, such a conventional voice recognition method GPS range finder has a problem of severe power consumption. Therefore, when measuring the distance based on GPS, the present inventor measures the distance by waking up the GPS module in a short cycle at the time when a section change is imminent, and wakes up the GPS module in a long cycle after the section change to measure the distance Thus, a study on a distance measuring device that can improve power consumption was conducted.

Republic of Korea Patent Publication No. 10-2018-0044731 (2018.05.03)

The present invention measures the distance by waking up the GPS module at a short cycle when a section change is imminent, and wakes up the GPS module at a long cycle after the section is changed to measure the distance, thereby reducing power consumption that can minimize power consumption. Its object is to provide an improved distance measuring device.

According to one aspect of the present invention for achieving the above object, a distance measuring device with improved power consumption includes a first timer generating a first period signal; a second timer generating a second period signal having a relatively longer signal period than the first period signal; A GPS module that calculates a current position, receives GPS main power in the GPS non-power saving mode, and receives GPS backup power having a relatively smaller current value than the GPS main power in the GPS power saving mode; When measuring the distance from the current location to a specific location known in advance or measuring the flight distance from the current location to a previously unknown location, the GPS power saving mode is switched to the GPS non-power saving mode, and the current location is received from the GPS module to determine the user's current location. a control unit for calculating a section, calculating a section in a first cycle when a section change is imminent, and calculating a section in a second cycle after the section is changed; It includes a battery that supplies power to the entire device.

According to an additional aspect of the present invention, the GPS power source for which the control unit switches from a GPS power saving mode to a GPS non-power saving mode in order to measure a distance from a current location to a previously known specific location or to measure a flight distance from a current location to a previously unknown location. a mode switching unit; a power controller for applying GPS main power to the GPS module in the GPS non-power saving mode and applying GPS backup power to the GPS module in the GPS power saving mode; a current location receiving unit for receiving a current location from a GPS module to which GPS main power is applied when the GPS power mode switching unit converts to a GPS non-power saving mode; Map information is searched for the section to which the current location received by the current location receiver belongs, and the section where the user is currently located is calculated. At the time of section change imminent, the section is calculated in the first cycle, and after the section change, the section is calculated in the second cycle. It includes an interval calculation unit that does.

According to an additional aspect of the present invention, the control unit further includes a distance measuring unit for measuring a distance from a current location within the range calculated by the interval calculating unit to a pre-known specific location within the interval.

According to an additional aspect of the present invention, the distance measuring unit may be implemented to measure the distance from the current location to a specific previously known location by reflecting the current location and the altitude of the previously known specific location.

According to an additional aspect of the present invention, the control unit further includes a flight distance measurement unit for measuring a flight distance from a current position in the segment calculated by the segment calculating unit to a previously unknown arbitrary position in the segment.

According to an additional aspect of the present invention, the flight distance measurement unit may be implemented to measure a flight distance from the current location to a previously unknown location by reflecting the current location and the altitude of the previously unknown location.

According to an additional aspect of the present invention, the distance measuring device with improved power consumption may further include a memory for storing map information.

According to an additional aspect of the present invention, a distance measuring device with improved power consumption includes a speaker that outputs a result of measuring a distance from a current location to a predetermined location or a distance measurement result from a current location to an unknown location. can include more.

According to an additional aspect of the present invention, the distance measurement device with improved power consumption receives voice input, receives the microphone main power in the microphone non-power saving mode, and receives a microphone current value relatively smaller than the microphone main power in the microphone power saving mode. A microphone receiving backup power may be further included.

According to an additional aspect of the present invention, a microphone power mode switching unit for switching from a microphone power saving mode to a microphone non power saving mode when a voice is input by a microphone; a voice detection unit that detects a wakeup sound from a voice input through a microphone that has been switched to a microphone non-power saving mode by the microphone power mode switching unit; A switching command output unit for outputting a switching command to the GPS power mode switching unit to switch from the GPS power saving mode to the GPS non-power saving mode when the wakeup voice is detected by the voice detector may be further included.

According to a further aspect of the present invention, the wakeup voice may be a voice initiating a distance measurement from the current location to a specific pre-known location or a voice initiating a distance measurement from the current location to an arbitrary previously unknown location.

According to an additional aspect of the present invention, the distance measuring device with improved power consumption may further include a button for inputting a wakeup button signal.

According to an additional aspect of the present invention, the control unit may further include a switching command output unit for outputting a switching command to the GPS power mode switching unit to switch from a GPS power saving mode to a GPS non-power saving mode when a wakeup button signal is input by a button. can

According to a further aspect of the invention, the wake-up button signal is a signal that initiates a distance measurement from the current location to a specific pre-known location or any previously unknown location from the current location, depending on whether the button is pressed briefly or long-pressed. It may be a signal that initiates the distance measurement to the position.

According to the present invention, when a section change is imminent, the GPS module wakes up in a short cycle to measure the distance, and after the section is changed, the GPS module wakes up in a long cycle to measure the distance, thereby minimizing power consumption, thus measuring distance It has the effect of increasing the usage time of the device.

1 is a block diagram showing the configuration of an embodiment of a distance measuring device with improved power consumption according to the present invention.
2 is a block diagram showing the configuration of an embodiment of a controller of a distance measuring device with improved power consumption according to the present invention.
3 is a block diagram showing the configuration of another embodiment of a distance measuring device with improved power consumption according to the present invention.
4 is a block diagram showing the configuration of another embodiment of a control unit of a distance measuring device with improved power consumption according to the present invention.
5 is a flowchart illustrating a booting process of a distance measuring device with improved power consumption according to the present invention.
6 is a flowchart illustrating a process of calculating a section of a distance measuring device with improved power consumption according to the present invention.
7 is a flowchart illustrating a process of measuring a distance of a distance measuring device with improved power consumption according to the present invention.
8 is a flowchart illustrating a flight distance measurement process of the distance measuring device with improved power consumption according to the present invention.

Hereinafter, the present invention will be described in detail so that those skilled in the art can easily understand and reproduce the present invention through preferred embodiments described with reference to the accompanying drawings. Although specific embodiments are illustrated in the drawings and related details are described, they are not intended to limit the various embodiments of the present invention to any particular form.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the embodiments of the present invention, the detailed description will be omitted.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

On the other hand, when a component is referred to as “directly connected” or “directly connected” to another component, it should be understood that no other component exists in the middle.

1 is a block diagram showing the configuration of an embodiment of a distance measuring device with improved power consumption according to the present invention. As shown in FIG. 1, the distance measuring device 100 with improved power consumption according to this embodiment is a terminal carried by a user, and includes a first timer 110, a second timer 120, and a GPS module. 130, a controller 140, and a battery 150.

The first timer 110 generates a first cycle signal. At this time, the first cycle signal is a short cycle signal and is a cycle for calculating a section in which the user is currently located at a time point where a section change is imminent.

For example, when a golf ball tee-shot at a current hole tee shot position of a golf course is expected to enter a neighboring hole, this time point may be an imminent time point for changing a section. Since the current hole and the neighboring hole form a boundary at the point where the section change is imminent, the hole (section) where the user is currently located must be calculated in a short period to determine the user's hole movement (section movement).

The second timer 120 generates a second period signal having a relatively longer signal period than the first period signal. At this time, the first period signal is a long period signal and is a period for calculating a period in which the user is currently located after a period change, that is, in a situation where there is no possibility of a period change.

For example, if a golf ball tee-shot from the current hole tee shot position of the golf course enters a neighboring hole and the user moves to a new neighboring hole, the hole movement (section change) is not performed until the user is expected to enter the new hole again, It is okay to calculate the hole (section) where the user is currently located in a long period.

The GPS module 130 calculates the current position, and receives GPS main power in the GPS non-power saving mode, and receives GPS backup power having a relatively smaller current value than the GPS main power in the GPS power saving mode.

The GPS module 130, which consumes a lot of power, is operated in the GPS power saving mode in which GPS backup power is applied, and GPS only when measuring the distance from the current location to a specific location known in advance or measuring the flight distance from the current location to an unknown location in advance. It is operated in the GPS non-power saving mode receiving the main power to minimize power consumption of the battery 150 .

For example, the current position may be the tee shot position of the current hole in the golf course, the specific previously known position may be the hole cup position of the current hole, and the distance measurement may be the distance measurement from the tee shot position of the current hole to the hole cup position of the current hole, An arbitrary location that is not known in advance may be a tee shot location after the golf ball lands after the tee shot, and the flight distance measurement may be a golf ball flight distance after the tee shot.

When measuring the distance from the current location to a pre-known specific location or measuring the flight distance from the current location to a previously unknown location, the controller 140 switches from the GPS power saving mode to the GPS non-power saving mode, and the GPS module 130 reports the current location. is received to calculate the section where the user is currently located, but calculates the section in the first cycle when the section is about to change, and calculates the section in the second cycle after the section is changed.

The control unit 140 sets the GPS module 130 in the GPS power saving mode for every first cycle at the imminent point of section change to measure the distance from the current location to a previously known specific location or to measure the flight distance from the current location to a previously unknown location. The current position is received by switching to the GPS non-power saving mode, and after the section is changed, the GPS module 130 is switched from the GPS power saving mode to the GPS non-power saving mode every second cycle to receive the current position.

On the other hand, when receiving the current location from the GPS module 130, the controller 140 switches the GPS module 130 from the GPS non-power saving mode to the GPS power saving mode, and during the time when distance measurement or flight distance measurement is not performed, the GPS module ( 130) is maintained in the GPS power saving mode to minimize power consumption of the battery 150.

Battery 150 supplies power throughout the device. In this case, the battery 150 may be a rechargeable battery. The controller 140 applies relatively large GPS main power to the GPS module 130 using the power of the battery 150 only at the moment when distance measurement or flight distance measurement is performed, and while distance measurement or flight distance measurement is not performed, the battery 150 ) to apply relatively small GPS backup power to the GPS module 130 using power to minimize battery 150 power consumption.

By implementing in this way, the present invention measures the distance by waking up the GPS module at a short cycle when a section change is imminent, and wakes up the GPS module at a long cycle after the section is changed to measure the distance, thereby minimizing power consumption. Therefore, it is possible to increase the time of using the distance measuring device.

2 is a block diagram showing the configuration of an embodiment of a controller of a distance measuring device with improved power consumption according to the present invention. As shown in FIG. 2, the control unit 140 of the distance measuring device 100 with improved power consumption according to this embodiment includes a GPS power mode switching unit 141, a power control unit 142, and a current location receiving unit. (143) and a section calculation unit (144).

The GPS power mode switching unit 141 switches the GPS power saving mode to the GPS non-power saving mode in order to measure a distance from a current location to a previously known specific location or to measure a flight distance from a current location to an unknown location.

At this time, the GPS power saving mode is a mode in which the GPS module 130 receives GPS backup power having a relatively smaller current value than the GPS main power, and the GPS non-power saving mode is a mode in which the GPS module 130 receives the GPS main power. to be.

For example, the current position may be the tee shot position of the current hole in the golf course, the specific previously known position may be the hole cup position of the current hole, and the distance measurement may be the distance measurement from the tee shot position of the current hole to the hole cup position of the current hole, An arbitrary location that is not known in advance may be a tee shot location after the golf ball lands after the tee shot, and the flight distance measurement may be a golf ball flight distance after the tee shot.

The power control unit 142 applies GPS main power to the GPS module 130 in the GPS non-power saving mode, and applies GPS backup power to the GPS module in the GPS power saving mode. At this time, the GPS backup power supply has a relatively smaller current value than the GPS main power supply.

The power control unit 142 maintains the GPS module 130 in the GPS power saving mode during a time when distance measurement or flight distance measurement is not performed to minimize battery 150 power consumption, and then, when distance measurement or flight distance measurement is performed, GPS non-power saving mode. mode, and the GPS main power is applied to the GPS module 130.

The current location receiving unit 143 receives the current location from the GPS module 130 to which GPS main power is applied when the GPS power mode switching unit 141 switches to the GPS non-power saving mode. For example, the current location receiving unit 143 may be implemented to receive the current location from the GPS module 130 in a serial bus communication method.

The GPS module 130 receives satellite signals from GPS satellites with minimal power in the GPS power saving mode, calculates and stores the current position, and then switches to the GPS non-power saving mode when measuring distance or flight distance, and displays the last saved current position as the control unit 140 ) is sent to Then, the current location receiver 143 receives it.

The section calculation unit 144 calculates the section where the user is currently located by searching map information for the section to which the current location received by the current location receiver 143 belongs, and calculates the section in a first cycle when the section change is imminent, After the section is changed, the section is calculated in the second cycle.

The section calculating unit 144 detects a section in which the user, that is, the distance measuring device is currently located, before measuring the distance from the current location to a previously known specific location or measuring the flight distance from the current location to a previously unknown location.

At this time, when the section change is imminent, the section to which the current position received from the GPS module 130 belongs is detected every first cycle, and after the section is changed, the section to which the current position received from the GPS module 130 belongs every second cycle detect

Meanwhile, according to an additional aspect of the invention, the control unit 140 may further include a distance measurement unit 145. The distance measurement unit 145 measures the distance from the current location within the range calculated by the interval calculation unit 144 to a previously known specific location within the interval.

In this case, the distance measurement unit 145 may be implemented to measure the distance from the current location to a previously known specific location by reflecting the current location and the altitude of the previously known specific location.

For example, the current location may be a tee shot location of a current hole in a golf course, a specific previously known location may be a hole cup location of the current hole, and the distance measurement may be a distance measurement from the tee shot location of the current hole to the hole cup location of the current hole.

Since the position of the hole cup of each hole of the golf course on the map information has a previously known coordinate value, and the current position of the tee shot position of the current hole of the golf course is a coordinate value obtained from the GPS module 130, the distance between the two positions from these two coordinate values distance can be calculated.

However, since the two locations may be located on different elevations, a more accurate distance measurement is possible if the distance between the two locations is calculated by reflecting the elevation difference between the two locations.

At this time, the altitude value of a specific location known in advance may be a previously known value, and the altitude value of the current location may be calculated by installing an altimeter (not shown) in the distance measurement device.

Meanwhile, the distance between the two positions to which the altitude is reflected may be calculated using a trigonometric function method. Since the distance between the two positions where the altitude is not reflected is the length of the base, and the difference in altitude between the two positions is the height, the length of the hypotenuse, which is the distance between the two positions where the altitude is reflected, can be obtained using trigonometric functions.

By implementing this, the present invention measures the distance from the current position to a specific location known in advance by waking up the GPS module in a short cycle at the time of the section change imminent, and wakes up the GPS module in a long cycle after the section change Since power consumption can be minimized by measuring the distance from the current location to a specific location known in advance, the use time of the distance measuring device can be increased.

Meanwhile, according to an additional aspect of the invention, the control unit 140 may further include a flight distance measurement unit 146. The flight distance measuring unit 146 measures a flight distance from the current position within the section calculated by the section calculation unit 144 to a previously unknown location within the section.

At this time, the flight distance measurement unit 146 may be implemented to measure the flight distance from the current location to a previously unknown location by reflecting the current location and the altitude of the location that is not known in advance.

For example, the current location may be the tee shot location of the current hole in the golf course, an arbitrary location that is not known in advance may be the tee shot location after the golf ball lands after the tee shot, and the distance measurement may be the golf ball flight distance measurement after the tee shot.

The tee shot location of the current hole in the golf course, which is the current location, is the coordinate value obtained from the GPS module 130, and the tee shot location after the golf ball has fallen after the tee shot is the coordinate value obtained from the GPS module 130 after the user moves to this location. , the distance between the two positions can be calculated from these two coordinate values.

However, since the two locations may be located on different elevations, a more accurate distance measurement is possible if the distance between the two locations is calculated by reflecting the elevation difference between the two locations.

At this time, the altitude value of the current position may be calculated by installing an altimeter (not shown) in the distance measurement device, and the distance between the two positions to which the altitude is reflected may be calculated using the trigonometric function method. Since the distance between the two positions where the altitude is not reflected is the length of the base, and the difference in altitude between the two positions is the height, the length of the hypotenuse, which is the distance between the two positions where the altitude is reflected, can be obtained using trigonometric functions.

By implementing this, the present invention wakes up the GPS module with a short cycle at the time of the section change imminent to measure the flight distance from the current position to an unknown location in advance, and wakes up the GPS module with a long cycle after the section change Since it is possible to minimize power consumption by measuring the flight distance from the current position to an unknown position in advance, it is possible to increase the use time of the distance measurement device.

Meanwhile, according to an additional aspect of the present invention, the distance measuring device 100 with improved power consumption may further include a memory 160 . The memory 160 stores map information created by a Geographic Information System (GIS). The section calculation unit 144 refers to the map information stored in the memory 160 and calculates a section to which the current location received by the current location receiver 143 belongs.

Meanwhile, according to an additional aspect of the present invention, the distance measuring device 100 with improved power consumption may further include a speaker 170 . The speaker 170 outputs a result of measuring a distance from the current position to a specific position known in advance or a result of measuring a flight distance from the current position to a previously unknown position.

At this time, the distance measurement result voice or flight distance measurement result voice output through the speaker 170 is a combination of a character recording comment predetermined by the control unit 140 and a variable number recording comment corresponding to the measured distance or flight distance. can be in the form

For example, if the voice as a result of measuring the distance output through the speaker 170 is 'one hundred and fifty meters left to the hole cup', 'one hundred and fifty' is a variable number recording comment corresponding to the measured distance, and the rest is predetermined. This is a text message.

Meanwhile, the speaker 170 may maintain a sleep state and become active only when outputting a voice as a distance measurement result or a voice as a result of a flight distance measurement, and outputs a voice as a distance measurement result or a voice as a result of a flight distance measurement.

By implementing in this way, the present invention outputs the distance measurement result from the current location to a previously known specific location or the distance measurement result from the current location to a previously unknown location by voice so that the user can easily and conveniently measure the distance in an auditory way. Alternatively, the flight distance measurement result can be known.

Meanwhile, according to an additional aspect of the present invention, the distance measuring device 100 with improved power consumption may further include a microphone 180 . The microphone 180 receives voice input, but receives microphone main power in the microphone power saving mode, and receives microphone backup power having a relatively smaller current value than the microphone main power in the microphone power saving mode.

The microphone power saving mode is a mode in which a microphone backup power having a relatively smaller current value than the microphone main power is applied to the microphone 180 to receive voice input through the microphone 180, and the microphone non-power saving mode is a mode in which a microphone 180 receives a voice input. In this mode, the main power of the microphone is applied to recognize the wakeup sound from the input voice.

Since more power is consumed when recognizing a specific wake-up voice compared to voice input, the microphone backup power, which is the minimum power, is applied to the microphone 180 to wait for voice input, and when an arbitrary voice is input, the microphone main power After the power is applied, the wakeup sound is recognized from the input voice.

Meanwhile, according to an additional aspect of the present invention, the control unit 140 may further include a microphone power mode switching unit 147a, a voice detection unit 148a, and a switching command output unit 149a.

The microphone power mode switching unit 147a switches the microphone power saving mode to the microphone non power saving mode when voice is input by the microphone 180 . The microphone 180 operates in a microphone power saving mode receiving microphone backup power, which is the minimum power, while waiting for voice input, and when an arbitrary voice is input, the microphone power mode switching unit 147a switches the microphone to the microphone non-power saving mode. do.

The voice detection unit 148a detects a wakeup sound from a voice input through the microphone 180 switched to the microphone non-power saving mode by the microphone power mode switching unit 147a.

At this time, the wake-up voice may be a voice initiating distance measurement from the current location to a previously known specific location or a voice initiating flight distance measurement from the current location to a previously unknown location. For example, the wake-up voice may be a preset voice such as 'distance measurement' or 'flying distance measurement'.

The switching command output unit 149a outputs a switching command to the GPS power mode switching unit 141 to switch from the GPS power saving mode to the GPS non-power saving mode when the wakeup voice is detected by the voice detection unit 148a.

Then, the GPS power mode switching unit 141 receiving the switching command from the switching command output unit 149a switches the GPS power saving mode to the GPS non-power saving mode, and the power control unit 142 transfers the GPS module 130 to the GPS main power mode. Power is applied, and the current location receiving unit 143 receives the current location from the GPS module 130 to which the main GPS power is applied.

In addition, map information is searched for the section to which the current location received by the current location receiver 143 through the section calculation unit 144 belongs, and the section in which the user is currently located is calculated. After the section is changed, the section is calculated in a second cycle, and then a distance measurement through the distance measurement unit 145 or a flight distance measurement operation through the flight distance measurement unit 146 is performed.

By implementing in this way, the present invention has the convenience of starting the measurement of the distance from the current location to a pre-known specific location or the measurement of the flight distance from the current location to an unknown location through the user's voice input.

3 is a block diagram showing the configuration of another embodiment of a distance measuring device with improved power consumption according to the present invention, and FIG. 4 is a configuration of another embodiment of a control unit of the distance measuring device with improved power consumption according to the present invention. It is a block diagram showing

Unlike the embodiments shown in FIGS. 1 and 2 , the distance measurement device with improved power consumption according to this embodiment implements a signal for starting distance measurement or a signal for starting distance measurement in a button method rather than voice. For example, redundant description of components having the same names and reference numerals as those of FIGS. 1 and 2 will be omitted.

The distance measuring device 100 with improved power consumption according to this embodiment includes a button 190 instead of a microphone. The button 190 is for inputting a wakeup button signal, and the wakeup button signal is input by a user's button manipulation.

Meanwhile, the control unit 140 switches the GPS power mode switching unit 141 to switch from the GPS power saving mode to the GPS non-power saving mode through the switching command output unit 149b when a wakeup button signal is input by the button 190. print the command

For example, the wake-up button signal is a signal that initiates a measurement of the distance from the current position to a specific previously known position, or a flight distance from the current position to any previously unknown position, depending on whether the button 190 is pressed short or long. It can be a signal that triggers the measurement.

Then, the GPS power mode switching unit 141 receiving the switching command from the switching command output unit 149b switches the GPS power saving mode to the GPS non-power saving mode, and the power control unit 142 sends the GPS module 130 to the GPS main power mode. Power is applied, and the current location receiving unit 143 receives the current location from the GPS module 130 to which the main GPS power is applied.

In addition, map information is searched for the section to which the current location received by the current location receiver 143 through the section calculation unit 144 belongs, and the section in which the user is currently located is calculated. After the section is changed, the section is calculated in a second cycle, and then a distance measurement through the distance measurement unit 145 or a flight distance measurement operation through the flight distance measurement unit 146 is performed.

By implementing in this way, the present invention has the convenience of starting a distance measurement from the current location to a pre-known specific location or a flight distance measurement from the current location to a pre-known arbitrary location through a user's button manipulation.

As described above, the booting process, section calculation process, distance measurement process, and flight distance measurement process of the distance measuring device with improved power consumption according to the present invention will be examined through FIGS. 5 to 8 .

5 is a flowchart illustrating a booting process of a distance measuring device with improved power consumption according to the present invention. As shown in FIG. 5, when the distance measuring device 100 with improved power consumption is booted, the controller 140 turns on the speaker 170 and outputs the battery 150 state as audio. , the GPS non-power saving mode is activated to apply the GPS main power to the GPS module 130.

The GPS module 130 calculates the current position by receiving GPS satellite signals, and the control unit 140 determines the initial section from the current position calculated by the GPS module 130, turns off the speaker 170, and Switching to the power saving mode, applying GPS backup power to the GPS module 130, activating the second timer 120 generating a second cycle signal having a relatively longer signal cycle than the first cycle signal, and then activating the next second cycle signal. Until the periodic signal is generated, the control unit 140 is in a sleep state.

6 is a flowchart illustrating a process of calculating a section of a distance measuring device with improved power consumption according to the present invention. As shown in FIG. 6 , the control unit 140 wakes up every first cycle when a section change is imminent, and when it is not the time when a section change is imminent, the controller 140 wakes up every second cycle, which is relatively longer than the first cycle. After waking up, the GPS module 130 is switched from the GPS power saving mode to the GPS non-power saving mode, and the GPS main power is applied to the GPS module 130.

When GPS main power is applied, the GPS module 130 that calculates and stores the current location transmits the current location to the controller 140, and the controller 140 transmits the current location received from the GPS module 130 to the section corresponding to the current location. is calculated, and it is determined whether the calculated interval is the same as the previously calculated interval.

If the section is changed, the controller 140 activates the second timer 120 and then turns on the speaker 170 to output a guide voice for hall change, then turns the speaker off, and the GPS module 130 ) is converted from the GPS non-power saving mode to the GPS power saving mode to apply GPS backup power to the GPS module 130, and then the control unit 140 enters a sleep state.

If the section has not changed, the controller 140 maintains the first timer 110 activated when the section change is imminent, and maintains the second timer 120 activated when the section change is not imminent. While doing so, the controller 140 switches the GPS module 130 from the GPS non-power saving mode to the GPS power saving mode, applies GPS backup power to the GPS module 130, and enters a sleep state.

7 is a flowchart illustrating a process of measuring a distance of a distance measuring device with improved power consumption according to the present invention. As shown in FIG. 7, when an arbitrary voice is input through the microphone 180 in the microphone power saving mode state to which the microphone backup power having a relatively smaller current value than the microphone main power supply is applied, the controller 140 switches the microphone power off. mode, and the microphone main power is applied to the microphone 180.

The microphone 180, which is switched to the microphone non-power saving mode and to which the microphone main power is applied, recognizes the wakeup sound for 'distance measurement' from the input voice, and the wakeup sound for 'distance measurement' is If recognized, the control unit 140 switches to the GPS non-power saving mode and applies GPS main power to the GPS module 130.

Then, the GPS module 130 that calculates and stores the current location transmits the current location to the controller 140, and the controller 140 determines the distance from the current location received from the GPS module 130 to a specific location known in advance. After measuring, the speaker 170 is turned on to voice guide the distance measurement result.

After voice guidance of the distance measurement result, the controller 140 switches from the GPS non-power saving mode to the GPS power saving mode, applies GPS backup power to the GPS module 130, turns off the speaker 170 and switches to the microphone power saving mode, After the microphone backup power is applied to the microphone 180, it enters a sleep state.

8 is a flowchart illustrating a flight distance measurement process of the distance measuring device with improved power consumption according to the present invention. As shown in FIG. 8, when the user manipulates the button 190 and a wakeup button signal is input, the control unit 140 switches the GPS module 130 from the GPS power saving mode to the GPS non-power saving mode so that the GPS module ( 130), the GPS main power is applied.

When GPS main power is applied, the GPS module 130 that calculates and stores the current location transmits the current location to the controller 140, and the controller 140 receives the current location from the GPS module 130 and obtains the current location from the current location. The flight distance to an unknown location is measured and measured, and the speaker 170 is turned on to output the flight distance measurement result as an audio.

After voice guidance of the flight distance measurement result, the controller 140 switches from the GPS non-power saving mode to the GPS power saving mode, applies GPS backup power to the GPS module 130, turns off the speaker 170, Sleep state.

As described above, the present invention measures the distance by waking up the GPS module at a short cycle when a section change is imminent, and wakes up the GPS module at a long cycle after the section is changed to measure the distance, minimizing power consumption Therefore, the time of using the distance measuring device can be increased.

Various embodiments disclosed in this specification and drawings are only presented as specific examples to aid understanding, and are not intended to limit the scope of various embodiments of the present invention.

Therefore, the scope of various embodiments of the present invention includes all changes or modified forms derived based on the technical spirit of various embodiments of the present invention other than the embodiments described herein are included in the scope of various embodiments of the present invention. should be interpreted as being

The present invention can be used industrially in the technical field related to distance measurement and its applied technology.

100: distance measurement device
110: first timer
120: second timer
130: GPS module
140: control unit
141: GPS power mode switching unit
142: power control unit
143: current location receiver
144: interval calculation unit
145: distance measuring unit
146: flight distance measuring unit
147a: microphone power mode switching unit
148a: voice detection unit
149a, 149b: conversion command output unit
150: battery
160: memory
170: speaker
180: microphone
190: button

Claims (14)

a first timer generating a first cycle signal;
a second timer generating a second period signal having a relatively longer signal period than the first period signal;
A GPS module that calculates a current position, receives GPS main power in the GPS non-power saving mode, and receives GPS backup power having a relatively smaller current value than the GPS main power in the GPS power saving mode;
When measuring the distance from the current location to a specific location known in advance or measuring the flight distance from the current location to a previously unknown location, the GPS power saving mode is switched to the GPS non-power saving mode, and the current location is received from the GPS module to determine the user's current location. a control unit for calculating a section, calculating a section in a first cycle when a section change is imminent, and calculating a section in a second cycle after the section is changed;
a battery that supplies power throughout the device;
A distance measuring device with improved power consumption, including According to claim 1,
The control unit:
a GPS power mode switching unit for switching from a GPS power saving mode to a GPS non-power saving mode to measure a distance from a current location to a predetermined location or to measure a flight distance from a current location to a previously unknown location;
a power controller for applying GPS main power to the GPS module in the GPS non-power saving mode and applying GPS backup power to the GPS module in the GPS power saving mode;
a current location receiving unit for receiving a current location from a GPS module to which GPS main power is applied when the GPS power mode switching unit converts to a GPS non-power saving mode;
Map information is searched for the section to which the current location received by the current location receiver belongs, and the section where the user is currently located is calculated. At the time of section change imminent, the section is calculated in the first cycle, and after the section change, the section is calculated in the second cycle. an interval calculator to do;
A distance measuring device with improved power consumption, including According to claim 2,
The control unit:
a distance measurement unit for measuring a distance from a current location within the range calculated by the interval calculation unit to a previously known specific location within the interval;
Distance measuring device with improved power consumption including more. According to claim 3,
The distance measurement is:
A distance measuring device with improved power consumption that measures the distance from a current location to a specific location known in advance by reflecting the current location and the altitude of the specific location known in advance. According to claim 2,
The control unit:
a flight distance measurement unit for measuring a flight distance from a current position within the range calculated by the interval calculation unit to a previously unknown location within the range;
Distance measuring device with improved power consumption including more. According to claim 5,
The flight distance measuring part is:
A distance measuring device with improved power consumption that measures a flight distance from a current location to a previously unknown location by reflecting the current location and the altitude of an unknown location. According to claim 2,
A distance measuring device with improved power consumption:
a memory to store map information;
Distance measuring device with improved power consumption including more. According to any one of claims 1 to 7,
A distance measuring device with improved power consumption:
a speaker that outputs a result of measuring a distance from a current location to a previously known specific location or a result of measuring a flight distance from the current location to a previously unknown location;
Distance measuring device with improved power consumption including more. According to claim 8,
A distance measuring device with improved power consumption:
a microphone that receives voice input, receives microphone main power in the microphone power saving mode, and receives microphone backup power having a relatively smaller current value than the microphone main power in the microphone power saving mode;
Distance measuring device with improved power consumption including more. According to claim 9,
The control unit:
a microphone power mode switching unit for switching from a microphone power saving mode to a microphone non-power saving mode when voice is input by the microphone;
a voice detection unit that detects a wakeup sound from a voice input through a microphone that has been switched to a microphone non-power saving mode by the microphone power mode switching unit;
a switching command output unit for outputting a switching command to the GPS power mode switching unit to switch from the GPS power saving mode to the GPS non-power saving mode when the wake-up voice is detected by the voice detection unit;
Distance measuring device with improved power consumption including more. According to claim 10,
The wake-up voice says:
A distance measuring device with improved power consumption, which is a voice initiating distance measurement from a current location to a pre-known specific location or a voice initiating flight distance measurement from a current location to a previously unknown location. According to claim 8,
A distance measuring device with improved power consumption:
A button to input a wakeup button signal;
Distance measuring device with improved power consumption including more. According to claim 12,
The control unit:
a switching command output unit for outputting a switching command to the GPS power mode switching unit to switch from a GPS power saving mode to a GPS non-power saving mode when a wakeup button signal is input by a button;
Distance measuring device with improved power consumption including more. According to claim 13,
The wake-up button signals:
Depending on whether the button is pressed short or long, it improves power consumption, which is a signal that initiates distance measurement from the current position to a specific pre-known location, or a signal that initiates flight distance measurement from the current location to a previously unknown arbitrary location. A distance measuring device.

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