KR20190103784A - Apparatus and method for photo sensing using multiple photo detector - Google Patents

Abstract

The present invention relates to a particle analysis device and, more specifically, to a micro particle analysis device which comprises: an optical receiving unit for receiving light emitted from a laser diode emitter; a processor capable of machine learning and including a laser driver and a motor driver; and a particle analysis unit for analyzing ultra-fine particles from the light received by the optical receiving unit.

Description

Optical sensor device and method using multiple optical receivers {APPARATUS AND METHOD FOR PHOTO SENSING USING MULTIPLE PHOTO DETECTOR}

The present invention is rapidly increasing the demand for sensors that can detect ultra-fine dust, yellow dust, tobacco smoke, etc. due to the global air pollution and the increase in the environmental industry, and as an optical sensor capable of detecting high-precision ultra-fine particles It works by measuring the amount of light reflected by the particles.

The microparticle measuring sensor measuring device using the existing LED light source has low accuracy and is evolving into a laser type particle counter method. In particular, the need for increasing the measurement accuracy of ultra fine dust by applying machine learning technology is increasing.

According to one embodiment an optical receiver for receiving light emitted from a laser diode emitter; A machine capable of machine learning, the processor including a laser driver and a motor driver; And a particle analyzer configured to analyze ultrafine particles from light received by the optical receiver.

According to another embodiment, the optical receiver includes: a laser diode emitter for emitting a laser; Also disclosed is a laser type ultra-fine dust sensor SoC integrated measuring device comprising an optical detector for receiving the light passing through the dust particles from the laser diode emitter.

According to another embodiment, the processor may be a laser type ultra-fine dust sensor SoC integrated measuring device including a digital LDO and an integrated VCO and capable of machine learning.

According to another exemplary embodiment, the particle analyzer may include: a pulse height detector configured to detect a height of a pulse; A preamplifier for amplifying a signal of light received by the particle analyzer; Also disclosed is a laser type ultra-fine dust sensor SoC integrated measuring device including a particle analyzer for analyzing the signal of the amplified light.

1 illustrates an SoC and a module structure of a laser type ultrafine dust sensor according to an embodiment.
2 illustrates a system and structure of an optical receiver according to an embodiment.
3 illustrates a sensor signal processing central processing unit (CPU) capable of machine learning according to one embodiment.
4 illustrates an analog front-end structure and interface according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of rights is not limited or limited by these embodiments. Like reference numerals in the drawings denote like elements.

The terminology used in the description below has been selected to be general and universal in the art to which it relates, although other terms may vary depending on the development and / or change in technology, conventions, and preferences of those skilled in the art. Therefore, the terms used in the following description should not be understood as limiting the technical spirit, and should be understood as exemplary terms for describing the embodiments.

In addition, in certain cases, there is a term arbitrarily selected by the applicant, and in this case, the meaning thereof will be described in detail in the corresponding description. Therefore, the terms used in the following description should be understood based on the meanings of the terms and the contents throughout the specification, rather than simply the names of the terms.

The present invention can be applied to a signal processing technique for measuring ultra-fine dust to manufacture a ultra-fine dust sensor and module of PM 1.0 or less.

The optical sensor measuring apparatus according to an embodiment is an ultrafine dust (PM10 / 2.5 / 1.0 / 0.3) laser transmitter analog IP. A 20-bit process precision ADC is used. There is a constant current circuit for ensuring light output uniformity and controlling the FAN air volume. Particle counter signal processing with machine learning technology is available. Sensor calibration technology. High precision, high efficiency, low power optical sensor measuring device can be applied to various applications such as home, industrial and military sensor voice compression technology.

Existing dust sensor solutions do not have a dedicated semiconductor solution, and the cost of manufacturing them is very high by developing unit devices such as DSP chips, driver ICs, amplifier ICs, and optical receiving devices in the form of boards. However, the optical sensor measuring apparatus according to the embodiment can be made low cost, small size, and low power through the manufacture of SoC.

1 illustrates an SoC and a module structure of a laser type ultrafine dust sensor according to an embodiment.

The SoC and module of the laser type ultrafine dust sensor according to an embodiment may include a laser driver, peripherals, NVRAM, a 32-bit processor platform, a digital LDO, and a laser diode emitter. It may include.

The motor driver may further include a motor driver, a calibrator, a secure boot, an integrated VCO, and the like for driving the fan. The optical sensor unit may further include a photo detector, a noise filter, an analog to digital converter (ADC), a pre amplifier, a pulse height detection, a particle analyzer, and the like.

2 illustrates a system and structure of an optical receiver according to an embodiment.

3 illustrates a sensor signal processing central processing unit (CPU) capable of machine learning according to one embodiment.

4 illustrates an analog front-end structure and interface according to an embodiment.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the devices and components described in the embodiments may be, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable arrays (FPAs), It may be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of explanation, one processing device may be described as being used, but one of ordinary skill in the art will appreciate that the processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as parallel processors.

The software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device. Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. Or may be permanently or temporarily embodied in a signal wave to be transmitted. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media.

The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Although the embodiments have been described with reference to the accompanying drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the claims that follow.

Claims (4)

An optical receiver configured to receive light emitted from the laser diode emitter;
A machine capable of machine learning, the processor including a laser driver and a motor driver; And
Particle analyzer for analyzing ultrafine particles from the light received by the optical receiver
Laser type ultra-fine dust sensor SoC integrated measuring device comprising a.
The method of claim 1,
The optical receiver,
A laser diode emitter for emitting a laser; And
An optical detector for receiving light passing through the dust particles from the laser diode emitter
Laser type ultra-fine dust sensor SoC integrated measuring device comprising a.
The method of claim 1,
The processor includes a digital LDO and an integrated VCO, machine-learning ultra-fine dust sensor SoC integrated measuring device.
The method of claim 1,
The particle analysis unit,
A pulse height detector for detecting a height of a pulse;
A preamplifier for amplifying a signal of light received by the particle analyzer; And
Particle analyzer for analyzing the signal of the amplified light
Laser type ultra-fine dust sensor SoC integrated measuring device comprising a.

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