TW201801523A - Distance measuring device capable of measuring the distance between a display device and a viewer - Google Patents

Abstract

A distance measuring device is suitable to be mounted on a display device and electrically connected between a power source and the display device. The distance measuring device includes a power source module, a distance measuring unit, and a control module. The power source module includes a switch unit. When the switch unit is in an on state, the display device and the power source are conducted to each other, and the display unit and the power source are not conducted when the switch unit is in an off state. The distance measuring unit comprises a driving motor, and a distance sensor that is connected with the driving motor and driven to rotate by the driving motor for sensing a distance between the display device and a viewer to generate a sensing value. When the control module determines that the sensed value is less than a first distance value, the control module drives the switch unit to switch from the on state to the off state.

Description

Ranging device

The invention relates to a distance measuring device, in particular to a distance measuring device suitable for a display device for sensing the distance between a viewer and the display device.

Televisions have become a very common household appliance in modern homes. They not only provide entertainment, they are also an important source of information. However, with the popularity of televisions, the myopia rate of younger children has also increased. One of the reasons Yes: When students watch TV, they often get closer and closer to the TV involuntarily, and if parents fail to remind them in time, the vision of school children will be negatively affected over time. Therefore, the present invention aims to improve this problem.

Therefore, an object of the present invention is to provide a distance measuring device suitable for a display device.

Therefore, the distance measuring device of the present invention is suitable for being installed on the display device and electrically connected between a power source and the display device. The distance measuring device includes a power module, a distance measuring unit, and a control module. The power module includes a power input port for electrically connecting the power source, a power output port for electrically connecting the display device, and a switch unit electrically connected between the power input port and the power output port. When the switch unit is in a conducting state, the power input port and the power output port are mutually conductive through the switch unit, and when the switch unit is in an off state, the power input port and the power output port are not conductive. The distance measuring unit is electrically connected to the power module and includes a distance sensor. The distance sensor is used to sense the distance between the display device and a viewer to generate a sensed value. The control module is electrically connected between the switch unit and the distance sensor. A first distance value is preset in the control module. The control module is used to receive the sensing value and connect it to the first sensor. A distance value is compared. When the control module determines that the sensing value is less than the first distance value, the control module drives the switch unit to switch from the on state to the off state.

In some embodiments, the distance measuring unit further includes a driving motor, and the distance sensor is connected to the driving motor and can be driven by the driving motor to rotate.

In some embodiments, the distance measuring device further includes a sounding device electrically connected to the control module. The control module presets a second distance value greater than the first distance value. When the control module determines When the sensing value is less than the second distance and greater than or equal to the first distance value, the control module drives the sound generating device to issue a warning sound.

In some embodiments, when the control module determines that the sensing value is less than the first distance value, the control module drives the sound generating device to issue a warning sound.

In some embodiments, the distance measuring device further includes a light-emitting unit electrically connected to the control module. When the control module determines that the sensing value is greater than or equal to the second distance value, the control module drives the The light emitting unit emits light in a first mode.

In some embodiments, when the control module determines that the sensing value is less than the second distance value and greater than or equal to the first distance value, the control module drives the light emitting unit to emit light in a second mode.

In some embodiments, when the control module determines that the sensing value is less than the first distance value, the control module drives the light emitting unit to emit light in a third mode.

In some embodiments, the distance measuring device further includes a hollow casing. A mounting hole is formed at the top of the casing, and the driving motor is disposed in the mounting hole and protrudes from the top of the casing to make the distance. The sensor is located above the housing.

In some embodiments, the switch unit of the power module is disposed in the casing, the casing is formed with a plurality of perforations, the power input port, the power output port, and the light emitting unit are respectively disposed in the perforations. .

In some embodiments, the distance measuring device further includes a fixture provided on the casing for fixing the casing to the display device.

The effect of the present invention is that by installing the distance measuring device on the display device, it is used to sense the distance between the viewer and the display device, and issue different warnings according to different distance values, which can effectively prevent the viewer It is too close when viewing the display device. In addition, since the distance sensor of the distance measuring unit can be driven to rotate by the driving motor, the angle that the distance sensor can detect is further enlarged, and the performance is further improved.

Referring to FIG. 1, FIG. 2 and FIG. 3, an embodiment of the distance measuring device of the present invention is suitable for being mounted on a display device 9 and electrically connected between a power source 10 and the display device 9. The display device 9 may be, for example, a TV, or a computer screen. The distance measuring device includes a housing 1, a power module 2, a distance measuring unit 3, a sound emitting device 4, a light emitting unit 5, a control module 6, and two fixtures 7. The power supply module 2, the ranging unit 3, the sound emitting device 4, and the light emitting unit 5 are each electrically connected to the control module 6.

The housing 1 is hollow and forms an accommodation space, and a top end of the housing 1 forms a mounting hole 11 communicating with the accommodation space. The housing 1 also forms a plurality of perforations communicating with the accommodation space. 12. In this embodiment, the number of the aforementioned perforations 12 is three, of which two perforations 12 are respectively located on the left and right sides of the casing 1, and the other perforation 12 is located on the front side of the casing 1.

The power module 2 includes a hole 12 passing through one side of the casing 1 and is used to electrically connect the power input port 21 of the power source 10, and a hole 12 passing through the other side of the casing 1 and is used for electricity The power output port 22 connected to the display device 9 and a switch unit 23 disposed in the accommodating space of the housing 1 and electrically connected between the power input port 21 and the power output port 22, in this embodiment The switch unit 23 includes a relay and a driving circuit for driving the relay, but is not limited thereto. When the switch unit 23 is in a conducting state, the power input port 21 and the power output port 22 are mutually connected through the switch unit 23 so that the power source 10 supplies power to the display device 9 through the power module 2. The switch unit When 23 is in an off state, the power input port 21 and the power output port 22 are not conductive, so that the power source 10 cannot supply power to the display device 9.

The ranging unit 3 includes a driving motor 31 disposed in the mounting hole 11 and protruding from the top of the casing 1, and a driving motor 31 connected to the driving motor 31 and located above the casing 1 and can be driven by the driving motor 31. The distance sensor 32 is driven to rotate. When the distance measuring device is activated, the driving motor 31 will drive the distance sensor 32 to rotate about 180 degrees, so that the distance sensor 32 detects the position of a viewer 100, and senses the display device 9 and the A distance D (shown in FIG. 3) between the viewers 100. Then, the distance sensor 32 generates a sensing value according to the distance D, and transmits the sensing value to the control module 6. In this embodiment, the distance sensor 32 is, for example, an ultrasonic distance sensor. In other embodiments, the distance sensor 32 may also be an infrared type, a microwave type, or an electromagnetic induction type. It is not limited to this embodiment.

The light-emitting unit 5 passes through the perforation 12 on the front side of the casing 1 and can be driven by the control module 6 to emit light in one of a first mode, a second mode, or a third mode. In this embodiment, the light-emitting unit 5 is a multi-color LED, and can emit light of different colors, such as blue, green, and red, in a constant or flashing manner according to different driving signals. Taking this embodiment as an example, the first mode of the light-emitting unit 5 is constant blue light, the second mode is blinking green light, and the third mode is constant red light. However, in other embodiments, the The light-emitting unit 5 may also be composed of a plurality of independent and different-color monochrome LEDs, and the light-emitting mode thereof is not limited to this embodiment.

The control module 6 is preset with a first distance value A1 and a second distance value A2 that is greater than the first distance value A1. The control module 6 can receive the sensing value and compare the sensing value with The first distance value A1 is compared with the second distance value A2. When the control module 6 determines that the sensing value is greater than or equal to the second distance value A2, it represents the difference between the viewer 100 and the display device 9. When the distance D between them is appropriate, the control module 6 drives the light emitting unit 5 to emit light in the first mode; when the control module 6 determines that the sensing value is less than the second distance value A2 and is greater than or equal to the first When the distance value A1 represents that the distance D between the viewer 100 and the display device 9 is slightly close, the control module 6 drives the light emitting unit 5 to emit light in the second mode, and simultaneously drives the sound emitting device 4 to emit A warning sound. In this embodiment, the sound generating device is, for example, a buzzer, but is not limited to this. When the control module 6 determines that the sensing value is less than the first distance value A1, it represents the When the viewer 100 approaches the display device 9 too much, the control module 6 not only drives the light-emitting unit 5 to And a third mode continuously driving the light-emitting device 4 emits a warning tone sounding, but driving the switch unit 23 is switched to the conducting state by that the off-state, thereby cutting off the power supply 10 to the display device 9. In this embodiment, the first distance value A1 is taken as an example of 30 cm, and the second distance value A2 is taken as an example of 100 cm. However, the first distance value A1 and the second distance value A2 can be The value is changed by the control module 6 to correspond to, for example, different display device sizes or use environments, and is not limited to this embodiment.

It is worth mentioning that after the distance measuring device is activated, the distance sensor 32 continuously and continuously senses the distance D between the viewer 100 and the display device 9, that is, the distance sensor 32 The sensing value can be updated in time as the position of the viewer 100 changes.

The clamps 7 are provided at the bottom end of the casing 1 to clamp the display device 9 to fix the casing 1 to the top of the display device 9, and each of the clamps 7 can be adjusted. Complies with display devices 9 of various thicknesses.

In summary, the distance measuring device of the present invention drives the distance sensor 32 to rotate by the driving motor 31, so that the distance sensor 32 can scan a wider angle to detect the position of the viewer 100 and sense the position of the viewer 100. The distance D between the display device 9 and the viewer 100 generates a sensing value. The control module 6 compares the sensing value with the first distance value A1 and the second distance value A2, and It can send out reminders by driving the light emitting unit 5 to emit light in different modes, driving the sounding device 4 to emit a warning sound, and driving the switch unit 23 to cut off the connection between the display device 9 and the power source 10, which can be effective This prevents the viewer 100 from approaching the display device 9 excessively, so that the object of the present invention can be achieved.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧shell
11‧‧‧Mounting holes
12‧‧‧ perforation
2‧‧‧ Power Module
21‧‧‧Power input port
22‧‧‧Power output port
23‧‧‧Switch unit
3‧‧‧ ranging unit
31‧‧‧Drive motor
32‧‧‧Distance Sensor
4‧‧‧ sounding device
5‧‧‧light-emitting unit
6‧‧‧control module
7‧‧‧ Fixture
9‧‧‧ display device
10‧‧‧ Power
100‧‧‧ viewers
D‧‧‧distance
A1‧‧‧First distance value
A2‧‧‧Second distance value

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, wherein: FIG. 1 is a perspective view of an embodiment of the ranging device of the present invention; FIG. 2 is a hardware of the embodiment A schematic diagram of the connection relationship; and FIG. 3 is a schematic diagram of a use state of the embodiment.

2‧‧‧ Power Module

21‧‧‧Power input port

22‧‧‧Power output port

23‧‧‧Switch unit

3‧‧‧ ranging unit

4‧‧‧ sounding device

5‧‧‧light-emitting unit

6‧‧‧control module

9‧‧‧ display device

10‧‧‧ Power

Claims (12)

A ranging device is suitable for being installed on a display device and electrically connected between a power source and the display device. The ranging device includes: a power module including a power input port for electrically connecting the power source, a It is used to electrically connect the power output port of the display device and a switch unit electrically connected between the power input port and the power output port. When the switch unit is in a conducting state, the power input port and the power output port The switch units are mutually conductive, and when the switch unit is in an off state, the power input port and the power output port are not conductive; a distance measuring unit is electrically connected to the power module and includes a distance sensor, The distance sensor is used to sense the distance between the display device and a viewer to generate a sensed value; and a control module electrically connected between the switch unit and the distance sensor, the A first distance value is preset in the control module. The control module is used to receive the sensing value and compare it with the first distance value. When the control module judges that the sensing value is smaller than the first distance value, distance Value, the control module driving the switch unit is switched from the ON state to the OFF state. The distance measuring device according to claim 1, wherein the distance measuring unit further comprises a driving motor, and the distance sensor is connected to the driving motor and can be driven by the driving motor to rotate. The distance measuring device according to claim 2, further comprising a sound emitting device electrically connected to the control module. The control module presets a second distance value greater than the first distance value. When the control module determines When the sensing value is less than the second distance and greater than or equal to the first distance value, the control module drives the sound generating device to issue a warning sound. The distance measuring device according to claim 3, wherein when the control module determines that the sensing value is less than the first distance value, the control module drives the sound generating device to issue a warning sound. The distance measuring device according to claim 3, further comprising a light-emitting unit electrically connected to the control module. When the control module determines that the sensing value is greater than or equal to the second distance value, the control module drives the The light emitting unit emits light in a first mode. The distance measuring device according to claim 5, wherein when the control module determines that the sensing value is less than the second distance value and greater than or equal to the first distance value, the control module drives the light emitting unit to The second mode emits light. The distance measuring device according to claim 6, wherein when the control module determines that the sensing value is less than the first distance value, the control module drives the light emitting unit to emit light in a third mode. The distance measuring device according to claim 5, further comprising a hollow housing. A mounting hole is formed at a top end of the housing, and the driving motor is disposed in the mounting hole and protrudes from the top end of the housing to make the distance. The sensor is located above the housing. The ranging device according to claim 8, wherein the switch unit of the power module is disposed in the casing, the casing is formed with a plurality of perforations, the power input port, the power output port, and the light emitting unit, respectively Threaded through the perforations. The distance measuring device according to claim 2, further comprising a hollow housing. A mounting hole is formed at the top end of the housing, and the driving motor is disposed in the mounting hole and protrudes from the top end of the housing to make the distance sense. The detector is located above the housing. The distance measuring device according to claim 10, wherein the switch unit of the power module is disposed in the casing, the casing is formed with a plurality of perforations, and the power input port and the power output port are respectively provided in the casing. perforation. The distance measuring device according to any one of claims 8 to 11, further comprising a fixture provided on the casing to fix the casing to the display device.