阅读说明：本技术 防电击保护系统及投影设备及防电击保护方法 (Electric shock prevention protection system, projection equipment and electric shock prevention protection method ) 是由 熊再祥 李屹 于 2018-08-24 设计创作，主要内容包括：本发明提供一种防电击保护系统及应用该防电击保护系统的投影设备及防电击保护方法,其中防电击保护系统包括具有容纳空间的壳体,盖接在壳体上的上盖、设置在容纳空间内具有开关电路的电源板、具有控制单元的主板以及固定在壳体内的测距仪,所述测距仪检测所述测距仪到所述上盖之间的距离并将检测值反馈给控制单元,当检测到测距仪器与所述上盖之间的距离改变时,所述控制单元控制所述开关电路断开。可以有效增强产品的安全性能,防止在检测或安装中产生电击隐患。(The invention provides an electric shock prevention protection system, projection equipment applying the electric shock prevention protection system and an electric shock prevention protection method, wherein the electric shock prevention protection system comprises a shell with an accommodating space, an upper cover covered on the shell, a power panel with a switch circuit arranged in the accommodating space, a mainboard with a control unit and a distance meter fixed in the shell, the distance meter detects the distance between the distance meter and the upper cover and feeds a detected value back to the control unit, and when the distance between the distance meter and the upper cover is detected to be changed, the control unit controls the switch circuit to be switched off. The safety performance of the product can be effectively enhanced, and the electric shock hidden danger generated in detection or installation is prevented.)

1. The utility model provides an electric shock protection system, its characterized in that, is including the casing that has accommodation space, the upper cover of lid on the casing, set up the power strip that has switch circuit in accommodation space, the mainboard that has the control unit and fix the distancer in the casing, the distancer detects the distancer arrives distance between the upper cover and feeds back the detected value to the control unit, when detecting the distancer with when the distance between the upper cover changes, the control unit control switch circuit disconnection.

2. The electric shock protection system of claim 1, wherein the rangefinder is an infrared detector or a laser detector.

3. The electric shock protection system as claimed in claim 1, wherein the switch circuit includes a first switch circuit and a second switch circuit independent from each other, a power supply board is turned on to supply power if and only if the first switch circuit and the second switch circuit are simultaneously turned on, and the control unit controls the first switch circuit to be turned on or off according to a detection value of the distance meter.

4. The electric shock protection system as claimed in claim 3, wherein the first switch circuit is provided at a front end of a power supply board, the first switch circuit including a relay, the first switch circuit controlling energization or deenergization of the power supply board through the relay.

5. The electric shock protection system as claimed in claim 4, wherein an LCC half-bridge resonant converter is disposed on the power board, and the second switch circuit controls the power board to output externally by controlling on/off of the LCC half-bridge resonant converter.

6. The electric shock protection system as claimed in claim 4, further comprising a switch button controlling the control unit, the control unit stopping receiving the detection value of the distance meter when the switch button is turned off.

7. The electric shock protection system as claimed in claim 6, further comprising a third switch circuit for controlling on/off of the distance meter, the third switch circuit being connected to the control unit, the control unit controlling the distance meter to stop measuring through the third switch circuit when the switch button is pressed.

8. The electric shock protection system as claimed in claim 7, wherein the control unit controls the first switch circuit to be turned on simultaneously when the switch button is pressed.

9. A projection apparatus comprising the electric shock protection system as claimed in any one of claims 1 to 8, wherein the housing is a housing of the projection apparatus.

10. An electric shock protection method for a projection apparatus, comprising the electric shock protection system as claimed in any one of claims 1 to 8, characterized by comprising the steps of:

the control unit controls the distance meter to detect the distance between the distance meter and the upper cover and collects the detection value of the distance meter;

comparing the detection value with a preset value, and sending a high level signal to the switch circuit when the detection value does not accord with the preset value;

the switching circuit controls the power panel to stop supplying power to the outside.

Technical Field

The invention relates to the field of optical equipment, in particular to an electric shock prevention protection system, projection equipment and an electric shock prevention protection method.

Background

At present, the laser projector product needs to be disassembled no matter in the stages of research and development, testing or after-sale maintenance, related workers may forget to pull out a power line before the disassembly, and in the process of disassembling the product, because the product is electrified, the product is contacted by people, and meanwhile, a safety hidden danger exists, namely, the product generates electric leakage and is electrically shocked to the related workers. There is therefore a need to add an anti-shock protection system to this problem.

Therefore, it is desirable to provide an electric shock protection system, a projection apparatus using the same, and an electric shock protection method to solve the above problems.

Disclosure of Invention

The invention provides an electric shock prevention protection system, projection equipment using the same and an electric shock prevention protection method, which are used for solving the safety problem generated in the disassembly stages of maintenance, test and the like in the prior art.

In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides an electric shock protection system, including the casing that has accommodation space, the upper cover of cup joint on the casing, set up power strip that has switch circuit in accommodation space, mainboard that has the control unit and fix the distancer in the casing, the distancer detects the distancer arrives distance between the upper cover feeds back the control unit with the detected value, when detecting the distancer with when the distance between the upper cover changes, the control unit control switch circuit disconnection.

Preferably, the distance measuring instrument is an infrared detector or a laser detector.

Preferably, the switch circuit includes a first switch circuit and a second switch circuit that are independent of each other, and when and only when the first switch circuit and the second switch circuit are simultaneously closed, the power board is turned on to supply power, and the control unit controls the first switch circuit to be turned off or on according to a detection value of the distance meter.

Preferably, the first switch circuit is arranged at the front end of the power panel, the first switch circuit comprises a relay, and the first switch circuit controls the power-on or power-off of the power panel through the relay.

Preferably, the power panel is provided with an LCC half-bridge resonant converter, and the second switch circuit controls the power panel to output externally by controlling on/off of the LCC half-bridge resonant converter.

Preferably, the range finder further comprises a switch button for controlling the control unit, and when the switch button is turned off, the control unit stops receiving the detection value of the range finder.

Preferably, the distance measuring device further comprises a third switch circuit for controlling the on-off of the distance measuring device, the third switch circuit is connected with the control unit, and when the switch button is pressed, the control unit controls the distance measuring device to stop measuring through the third switch circuit.

Preferably, when the switch button is pressed, the control unit simultaneously controls the first switch circuit to be conducted.

In order to solve the technical problem, the invention adopts another technical scheme that: there is provided a projection device comprising the electric shock protection system as described above, the housing being a housing of the projection device.

In order to solve the technical problem, the invention adopts another technical scheme that: there is provided an electric shock protection method for a projection apparatus, including the electric shock protection system as described above, including the steps of:

the control unit controls the distance meter to detect the distance between the distance meter and the upper cover and collects the detection value of the distance meter;

comparing the detection value with a preset value, and sending a high level signal to the switch circuit when the detection value does not accord with the preset value;

the switching circuit controls the power panel to stop supplying power to the outside.

The invention has the beneficial effects that: the invention provides an electric shock protection system which is different from the prior art and comprises a shell with an accommodating space, an upper cover covered on the shell, a power supply board with a switch circuit arranged in the accommodating space, a main board with a control unit and a distance meter fixed in the shell, wherein the distance meter detects the distance between the distance meter and the upper cover and feeds a detected value back to the control unit, and when the distance between the distance meter and the upper cover is detected to be changed, the control unit controls the switch circuit to be switched off. The safety performance of the product can be effectively enhanced, and the electric shock hidden danger generated in detection or installation is prevented.

Drawings

FIG. 1 is a schematic diagram of the principle structure of the electric shock protection system of the present invention;

FIG. 2 is a schematic structural diagram of a first embodiment of the electric shock protection system of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the electric shock protection system of the present invention;

FIG. 4 is a schematic diagram of a first switch circuit of the anti-shock protection system of the present invention;

FIG. 5 is a schematic structural diagram of a third embodiment of the electric shock protection system of the present invention;

FIG. 6 is a schematic structural diagram of a fourth embodiment of the electric shock protection system of the present invention.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention provides an electric shock prevention protection system, projection equipment using the same and an electric shock prevention protection method, which are used for solving the safety problem generated in the disassembly stages of maintenance, test and the like in the prior art.