KR20040080398A - Backward Sensor Lamp Interface Use Microwave Sensor Module And New Light Source - Google Patents

Abstract

PURPOSE: A backward lamp interface by a new light source and a microwave sensor module is provided to maximize luminous intensity and reduce power consumption by substituting the lamp with an LED(Light Emitting Diode) or the new light source, and to prevent the accident in backward movement by alarming in detecting obstacles or pedestrians. CONSTITUTION: A backward lamp of a vehicle comprises an LED lamp(100) substituting a lamp with an LED or a new light source; an amplifying unit amplifying the luminous intensity of the LED lamp; a power supply unit(140) mounted to the lamp to supply power; first and second sensors(110,120) having a microwave sensor module or a distance detecting sensor; a source(130) for mounting the source device to the lamp; a microprocessor(15) mounted to the lamp to process signals from the sensors or the source; and a device(160) mounted to the lamp to process signals from the microprocessor.

Description

Backward Sensor Lamp Interface Use Microwave Sensor Module And New Light Source}

In general, a sensor using a human body detection sensor module is used as a method of controlling a lamp by detecting a human motion of a pyroelectric infrared sensor (PIR). However, since the sensor lamp uses an incandescent lamp or a fluorescent lamp, it is difficult to form the sensor unit and the bulb unit as one body part.

Incandescent lamps are used in buildings, and reversing lamps, taillights, and brake lamps are used in vehicles. Such a lamp is a filament-type light bulb, and is used while being mounted in a space enclosed by a case and a lens. However, the filament lamp has the following problems. That is, in the conventional filament lamp, the filament is heated when the power is applied, and thus the temperature is radiated to emit light. Therefore, it takes a predetermined time from the power supply to the temperature radiation, there is a problem that the response is inferior.

In addition, there is a problem that the life of the lamp is reduced by maintaining the high temperature of the sealed space by the heat generated from the lamp, and the maintenance and repair costs are increased due to frequent replacement of parts.

In general, a sensor or sensor refers to a device that detects, detects, and measures various kinds of physical quantities such as temperature, pressure, or humidity, and plays a role in sensory periods such as human eyes, nose, ear, and tongue. In addition, the detected information is transmitted to a means corresponding to the information processing unit (control unit) to make a decision.

The physical quantity to be detected by the sensor may be a variety of types such as magnetic, displacement, vibration, acceleration and rotation speed flow rate or flow rate, liquid component, gas component, visible light, infrared ray, ultrasonic wave, microwave radiation, X-ray, output signal Furnace uses amplification and storage in memory, or remote control is simple, electrical signal is mainly used due to ease of handling when input.

Representative sensors that perform such a role include an optical sensor, an image sensor, an ultrasonic sensor, a displacement sensor, and the like.

In addition, an optical sensor is an element that detects an object using light, and the optical sensor senses the amount of light, the shape, state, or movement of the object, and receives the light reflected from the object. By detecting the movement or speed, the incident light to the light receiving element increases (decreases) as the pulse-modulated light emitted from the light emitter enters the detection range, and thus the rectified signal level of the incident light increases. It is a general principle to give an output when the operation level is reached.

And, in the embodiment, the ultrasonic wave or infrared rays are fired in front of the robot, and the position is known by the intensity of the light returning from the object. If you teach your robot to stand, you'll be judged when you're in front of you.

On the other hand, the image sensor is a device that detects the information of the subject and is converted into an electrical image signal, and has a function of changing an invisible image such as an ultraviolet region that is invisible to the human eye to a visible image.

Ultrasonic sensor is a sensor that detects the position or distance of an object by using high frequency sound of 20MHz ~ 300MHz that can't be heard by human ear. When voltage is applied to the vibration membrane of 2 ~ 3㎛ thickness, ultrasonic wave is generated and the object When the ultrasonic wave is detected and returned by the vibrator again, the distance to the object becomes longer because the longer the distance to the object is, the longer it takes to reflect back.

The displacement refers to a sensor in which an object can take a moving distance or a change in position as an analog value. The object approaches the sensor head, an eddy current is generated on the surface of the object, and the oscillation energy is attenuated by the eddy current loss. To output the analog displacement.

Conventional sensors such as general optical sensors, image sensors, ultrasonic sensors, and the like described above are used to detect objects using infrared rays, ultrasonic heat, or smoke. In general, security devices are generally used, but the above-mentioned general sensors have a sensing distance of about 1 to 5 m due to the manufacture of transmitting means and receiving means modules, respectively, and the frequency bands generated are also excluded from ultrasonic sensors. Most of them only use analog frequency, such as 2MHz, due to the detection angle of about 110 ° various detection can not be made, there is a disadvantage that blind spots can occur in the detection.

The present invention has been made to solve the above-mentioned problems, the object of the present invention is to provide a lamp unit and a sensor unit on one side of the lamp unit using the LED or the new light source having a very high responsiveness as well as a small amount of heat generated during lighting. By constructing a circuit that operates in parallel, by implementing a rear sensing lamp that can integrate the sensing signal of the sensor and the light emitting signal of the lamp into one, it prevents excessive heat generation and improves the durability of the parts. It is to provide a rear sensing light interface using a new light source that can be integrated to reduce maintenance cost.

The present invention uses the Doppler radar principle as a sensing technology while manufacturing in the manner described above, but the antenna module and the antenna receiver are mounted in one module to generate a high frequency of 2 to 4 GHz of S-BAND bandwidth ( When the sensor detects a change in the object, the sensor module outputs the detected signal to the microcomputer control unit, and the microcomputer control unit analyzes and controls the signal, but amplifies the control signal. Afterwards, the external devices connected together according to the specified sensitivity and response time can be finally operated to minimize the detection error using the existing infrared sensor, and at the same time, it can be configured at low cost to improve the competitiveness of the product as much as possible. The purpose was to.

In addition, in order to achieve the above object, the sensor device used in the present invention is provided with a power supply terminal for generating a power source for supplying a certain amount of power to each part of the motion sensor device from the external power supply and the high frequency of 2 ~ 4GHz band A sensor module output unit configured to be configured as an RF sensor module to detect a movement of an object and to apply the sensed voltage signal to the microcomputer control unit according to the IF1 / IF2 channel; A signal amplifier configured to amplify the voltage signal calculated by the sensor module output unit into a signal having a recognizable size; The applied power is configured to emit radio waves to the outside through a patch antenna and to sense an object moving within the emission range of the radio waves; The frequency detected by the object in the patch antenna connected to the regenerator unit is to use the microwave motion sensor module, characterized in that configured to be formed as an analog signal while being output to the IF output unit.

Another object of the present invention is to use a LED or a new light source as a light source, the new light source and microwave consisting of the appearance and the cap portion of the conventional backward light to be used as it is mounted on the reversing light socket of the vehicle in use in the existing In order to provide a rear sensor interface using a sensor module, a technical problem has been provided.

1 is a block flow diagram illustrating the principle flow of the present invention.

2 is a cross-sectional view of the rear detection lamp according to the present invention.

Figure 3 is a perspective view showing the appearance of the rear detection lamp according to the present invention.

Figure 4 is an exemplary view showing the actual situation of contact accidents, personnel accidents occurring when the vehicle reverses.

5 is a cross-sectional view showing a detection angle when the rear detection lamp according to the present invention is mounted on the rear of the vehicle.

Figure 6 is an exploded view showing the internal assembly state of the rear detection lamp according to the present invention.

Figure 7 is a front perspective view showing a side perspective view of the rear detection lamp light emitting unit according to the present invention and the assembly position of the LED (LED) replaced with the incandescent lamp.

8 is a circuit diagram of an RF sensor device used in the present invention.

9 is a circuit diagram for ringing the sequential alarm using the LED and the timer IC used in an embodiment of the present invention.

10 is a block diagram showing a principle flow of a motion sensor of a microsensor module used in an embodiment of the present invention.

Figure 11 is a block diagram showing the operation flow of the microsensor module and the alarm circuit used in an embodiment of the present invention.

12 is a perspective view showing the internal structure of the LED.

13 is a block diagram showing an outline of the operation of the control apparatus associated with the microcomputer control unit.

14 is a block diagram showing a transmission and reception structure of the microwave sensor module.

* Description of the symbols for the main parts of the drawings *

15: microcomputer control unit 20: cap

23 Fresnel Lens

41: power supply unit 42: detection signal input and output unit

43: clock signal input and output unit 44a: IF1 channel signal input unit

44b: IF2 channel signal input section 45: sensitivity setting section

46: response time setting unit 47: memory storage unit

48: LED display part 49: relay operation part

60: 3rd printed circuit board (3rd SMD PCB)

100: new lamp unit 110: RF sensor unit

111: antenna 130: source part

160: device

Hereinafter, the interface of the rear detection lamp using the new light source and the microwave sensor module of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a block flow diagram showing the principle flow of the present invention, Figures 2 to 6 show a cross-sectional view of the rear detection lamp according to the present invention, since the size of the general reverse light is very small three printed circuit board (SMD Type PCB (top) is composed of an LED (111) for emitting light and an antenna 111 for transmitting / receiving microwave waves at the top, using an RF sensor device 110 at the second stage, and an alarm circuit at the third stage. It is desirable to settle the alarm buzzer is configured to be configured in the third stage or the cap 20 separately.

Figure 3 is a perspective view showing the appearance of the rear detection lamp according to the invention, Figure 4 is an exemplary view showing the actual situation of contact accidents, personnel accidents occurring when the vehicle reverses. 5 is a cross-sectional view showing a detection angle when the rear detection lamp according to the present invention is mounted on the rear of the vehicle, and the wide angle and narrow angle can be adjusted according to the performance of the RF sensor device, and FIG. 7 is the rear detection according to the present invention. Side view of the light emitting unit and the front cross-sectional view showing the assembly position of the LED (LED) replaced with the incandescent lamp, the LED maximizes the amount of light through the amplification amplifier is preferably configured as a white LED.

8 is a circuit diagram of one embodiment of the RF sensor device used in the present invention, which can be modified to a better performance, and FIG. 9 is a sequential alarm using an LED and a timer IC used in an embodiment of the present invention. The reason why two timer ICs are used is to make the alarm sound intermittent rather than continuously sounding the alarm so that it is not too noisy when parked at night in an apartment complex.

12 is a perspective view showing the internal structure of the LED, Figure 10, 11, 13, 14 is an operation flow of the motion sensor and the alarm circuit of the microsensor module used in an embodiment of the present invention. A more detailed operation principle is described below.

In general, a conventional lamp using a filament is composed of a case and a lens is mounted on the sealed space portion, the filament is heated when the power is applied, and accordingly the temperature radiation is made to emit light. Therefore, when the power is applied, it takes a predetermined time until the temperature is radiated, and thus the responsiveness is deteriorated. As a result, the life of the lamp is reduced by maintaining the high temperature in the closed space by the heat generated from the lamp. Due to frequent parts replacement, there was a problem that the maintenance cost increased.

Therefore, the present invention has a structure in which the lamp is replaced with a new light source such as an LED to maximize the amount of light while consuming less power, and at least one sensor is mounted on one side of the lamp to parallel the sensing response signal with the lighting signal. It consists of reversing lamp which added the function that can handle.

2 to 3, in the general reversing lamp having a lamp unit and a cap unit which emits light of a predetermined illuminance value by receiving a constant voltage power from the outside, the general reversing lamp (incandescent lamp having a filament) is an LED or a new light source. New lamp unit 100 to replace;

A power supply unit which operates as an input power source of the reverse lamp and supplies power to the present invention by being mounted on one side of the lamp;

Sensor units (110, 120) for mounting a microwave sensor module (Microwave Sensor Module) or at least one sensor for sensing the distance to one side of the light for use for sensing purposes;

A source unit (130) for mounting at least one source device on one side of the reverse light to process an input signal;

A microcomputer control unit 15 mounted on one side of the reverse light to process all control signals together with signals generated from the sensor unit or the source unit;

It is mounted on one side of the reverse light, characterized in that composed of a device unit 160 that can generate an alarm signal in response to the control signal of the microcomputer control unit.

In addition, the new lamp unit 100 may be configured as a Fresnel lens 23 in order to efficiently transmit the light generated by the LED or the new light source at a specific wide angle. Fresnel lenses are lenses that can achieve the same wide angle as convex and concave lenses by realizing various spherical surfaces in a thin flat transparent material, unlike ordinary convex or concave lenses.

The RF sensor device unit 110 and 111 may be used as an ultrasonic distance sensor or an infrared distance sensor as a sensor capable of detecting a distance, but in the present invention, a technology for embedding a sensor inside a lamp used to replace a reverse light Because of the phosphorus problem was characterized by using the microwave sensor module. Because plastic or glass is used as the material of the outer surface, which is a transparent body surrounding the new lamp unit, in this case, the ultrasonic wave or infrared sensors hit the transparent body, so scattered waves or scattered light are emitted, which causes a great disturbing effect on the sensing ability. to be.

Thus, to describe the operation process of the microwave sensor module (hereinafter referred to as RF sensor device) used in the present invention,

When a regulator voltage is applied through a resistor when 5V power is applied to the circuit, the regulator resonates, and a signal amplified through TR is transmitted to the patch antenna, and a signal is emitted from the patch antenna to move an object. When it senses, it is configured to receive the sensed signal and carry it on a voltage to the IF output.

In addition, the present invention is to generate a low-frequency voltage signal when the high-frequency of the S-BAND bandwidth of 2 ~ 4GHz unit is emitted from the RF sensor device, and detects a radio wave coming back irregularly hit the surrounding moving object, the low frequency voltage The signal is amplified into a signal of a size that can be controlled by the microcomputer control unit 15 through an amplifier, and the amplified signal is output as a control signal through a microcomputer control unit and a built-in program, and then a control signal by the microcomputer control unit. And to check the operation of the sensor through the output unit according to the sensitivity of the initial input sensitivity and response time, and to drive the external device associated with the sensor according to the operation of the sensor.

13 to 14 are block diagrams showing the concept of the operation of the microphone wave sensor module used in the present invention, and a schematic block diagram showing an RF sensor device and a microcomputer control unit mounted inside the rear detection lamp. Shows a circuit diagram by

The RF sensor device 110 largely generates a power supply unit 11 for supplying 5V power to the RF sensor device, a resonator part that generates a high frequency in units of 2 to 4 GHz and emits a radio wave to transmit it to the patch antenna 13. 12, a signal amplifier 16 for amplifying the high frequency voltage signal calculated by the regulator unit 12, the amplified signal is transmitted to the patch antenna 13 and the patch antenna 13 When the signal is emitted to detect the object is composed of the IF output unit 14 for outputting the detected signal to the microcomputer control unit 15.

The power supply unit 11 is a means for supplying a predetermined amount of power to each part of the RF sensor device 110 from an external power supply device (not shown) so that a normal operation is performed. Connect the AC / DC power terminal by an external power supply device to allow the power to be applied to the inside of the device.Also, each part of the other pin may be connected to a signal contact suitable for the rear sensing light. If a relay is used, make sure that the NC contact of the relay is connected to the power terminal block.

At this time, when AC / DC power is applied to the power terminal block to supply power to the device, the power supply is prevented by the negative power supply through the negative mounting of the (+) (-) power terminal. A bridge circuit is additionally provided to enable use without discriminating the positive (+) (-) terminals, and the power applied through the power terminal block is rectified to a predetermined size of power through a voltage regulator to maintain it. The rectified power value is used as a basic power source for operating the microcomputer control unit 15 by program control.

In addition, the patch antenna 13 emits radio waves due to the operation of the regulator unit 12 when power is applied to the power supply unit 11.

Then, the moving object is detected within the range of radio waves emitted from the patch antenna 13.

In this situation, the signal amplifier 16 amplifies the input signal and converts the signal into a signal that can be recognized by the microcomputer control unit 15.

At this time, the microcomputer control unit 15 grasps and controls each unit connected to the RF sensor device 110, receives and processes the signals and voltages transmitted to the respective units, and applies the voltage values of the received signals to the corresponding units. You will be performing a series of steps that will retransmit to another part of the location.

In addition, the value detected by the frequency detected by the object in the patch antenna 13 is output to the IF output unit 14 is formed as an analog signal while the IF output unit 14 controls the control of the microcomputer control unit 15. Will receive.

The difference from the existing X-BAND is that the resonator unit 12 forms a resonant frequency without using a DRO, and the S-BAND is characterized in that the antenna is integrally formed.

In the above situation,

S-BAND signal bandwidth is 2 ~ 4GHz,

The signal bandwidth of the X-BAND is 8-12 GHz,

The signal bandwidth of KU-BAND is 12-18GHz,

The signal bandwidth of KA-BAND is 18-30 GHz.

Therefore, it is preferable that the present invention adopts the S-BAND type which is convenient to use and inexpensive to configure the RF sensor device.

On the other hand, the microcomputer control unit 15 receives and controls a signal transmitted from each unit, and the means for retransmitting it is connected, the supply of power supplied to the power supply unit 11 through an external power supply device Means (41) to be checked, means (42) for checking input / output of a sensing power signal applied to the microcomputer control unit (15), means (43) for checking input / output of an oscillator connection or an external clock source, and the RF Means 44a for inputting the signal and power amplified by the IF1 channel of the sensor module, means 44b for inputting the signal and power amplified by the IF2 channel of the RF sensor module;

Sensitivity setting means 45 for adjusting the sensing distance and the sensing angle for the external moving object, response time setting means 46 for setting the initial time and the detection time in response to the external moving object, and the user Nonvolatile memory storage means 47 for storing the sensitivity and response time set by the sensor, LED display means 48 for visually confirming the object as the object is detected, and a relay for driving the associated external device. It is characterized in that the means for activating 49 uses an RF sensor device connected to each pin of the microcomputer control unit 15 and configured to control the entire circuit.

When described in detail the operation and effects of the RF sensor device used in the present invention made of a configuration as described above.

First, the microcomputer control unit 15 receives and controls a signal transmitted from each unit and checks the power supplied to the power unit 11 through an external power supply, where the means for retransmitting it is connected. In addition, the input and output of the sensing power signal, the amplified signal and the input and output check of the external clock source, together with the response time to set the early time and the detection time to react to the external moving object, and visually confirm this as the object is detected LED 48 means for displaying are activated.

On the other hand, the relay operating means 49 for driving the external device connected as described above is connected to each pin of the microcomputer control unit 15 to control the entire circuit.

In the above situation, when the signal is emitted from the patch antenna 13 to detect a moving object, the detected signal is formed as an analog signal through the IF output unit 14. The analog signal is transmitted to the microcomputer controller 15 through the IF output unit 14, and the microcomputer controller 15 analyzes and controls the signal to express whether the sensor is in operation. At this time, the difference from the existing X-BAND is to make a resonant frequency by using the regulator portion 12 without using the DRO.

In addition, in the conventional X-BAND, the patch antenna 13 is composed of TX and RX, whereas the S-BAND of the present invention is formed of an integrated antenna.

On the other hand, the setting means of the sensitivity indicates the ability of the RF sensor device to receive up to a weak signal, the adjustment of the sensitivity is a step by step (for example, 1 by a switch connected to the microcomputer control unit) ~ 9 steps) can be set manually by the user, the value of the sensitivity is close to 1, the smaller the value, the sensing distance and the detection angle is reduced, the value of the sensitivity is closer to 9, the larger the value is detected for the object Distance and detection angle become large.

Therefore, in the present invention, it is preferable that the detection distance is set in at least three steps between 0.3 and 2 meters, and the setting value is set to the microcomputer control unit by a program. That is, when the vehicle reverses, when the object to be detected is at a distance of 2 meters, the alarm sounds twice a second, when it is narrowed down to a distance of 1 meter, an alarm sounds three times a second. When it is further narrowed to 0.3mm, it is desirable to ring 7 times per second so that the driver senses an obstacle and brakes the vehicle. If the obstacle is a human, the alarm sounds and the vehicle is avoided in the backward direction of the vehicle. It can be said that it is the most desirable to characterize this because it can prevent personnel accidents in advance.

The delay / time setting means outputs a voltage signal from the initial voltage by controlling the frequency of the microcomputing unit 15 that changes together with the movement of the object, and then turns the sensor signal ON / OFF or at least one. In a series of processes for transmitting as a control signal, as a means for setting the signal detection time until the sensor detects it and responds to the output unit according to the change of the movement of the object, together with the microcomputer control unit 15 It is configured to be able to set the initial response time and response delay time according to the detection of the object.The default value of the response time initially set according to the environment of the place where the device is to be used or the size and weight of the object to be detected. Use it after modifying.

And, the LED 48 display means is made of a device that emits light by the operation of the sensor when the sensor device detects the movement of the object and finally drives the sensor after driving the external device connected together, As a means for displaying the operation of the device in an externally identifiable form, the LED display means to emit light according to the operation of the alarm device that requires the alarm and operation in conjunction with the device, such as a rear detection. At this time, the LED is preferably configured to configure the circuit so as to emit light in at least two different colors.

The memory storing means 47 is connected to the microcomputer control unit 15 to store the sensitivity and response time specified by the user's setting. When the power is cut off using the nonvolatile memory, the previously stored data setting value is lost. Memory to perform the role of non-volatile memory in the microcomputer control unit 15 so that, even in the event of a power failure due to a power failure, it is possible to use the previously specified value without having to set the sensitivity or response time to a new value. If the means is provided, the memory storage means 47 may be additionally provided.

The output unit may use a relay as a means for finally operating the sensor and determining whether to authenticate the external device associated with the sensor by the sensor module input unit 20 and the control of each unit by the microcomputer control unit 15. In addition, according to the final signal by the control of the microcomputer control unit 15 is configured to deliver on / off or at least one control signal to the external device, the external sensing object is detected by the RF sensor device and the detection signal Is to drive an external device that requires operation by passing through the relay and the like by the control by the microcomputer control unit 15.

As a result, when the antenna transmitter and the antenna receiver are mounted in one module and detect the change of the object by the sensor module generating high frequency of S-BAND bandwidth of 2 to 4 GHz, the sensor module detects the motion detected through the IF output unit. The signal is transmitted to the microcomputer control unit, and the microcomputer control unit analyzes and controls the signal, but amplifies and controls the detection signal, and finally operates the external devices linked together according to a specified sensitivity and response time. It is possible to minimize the detection error by using the ultrasonic sensor or the infrared sensor which is the distance sensor of the sensor.

In other words, if the external device connected to the RF sensor device is a detector or an alarm, the fastest operation is necessary to operate the alarm, so that the response delay time through the sensor is minimized, and the NO contact of the relay is turned on. It may be configured or transmitted as at least one control signal to sound an alarm in the rear detection lamp and, if necessary, flashing the lamp unit.

As described above, the internal structure and operation principle of the rear detection, etc. have been described, but those skilled in the art will be able to devise another embodiment. Therefore, it is obvious that the present invention is not limited only to the above embodiment. You can do it.

As described in detail in the configuration of the invention, according to the present invention by replacing the conventional reversing lamp with a LED or a new light source can have an efficient structure that maximizes the amount of light and consumes less power, and also one on one side of the lamp The cost savings can be expected because two or more functions can be realized in one body by adding a function that parallelizes the sensing response signal by mounting the above sensor.

By using the present invention, when the vehicle reverses, it obtains a light source due to the light emitted from the reverse light and at the same time detects an obstacle behind the vehicle and sounds an alarm so that the reverse accident can be prevented in advance, thus helping the vehicle safety and low cost. Highly efficient vehicle safety devices can be realized.

Claims (4)

In a reversing light of an automobile provided with a lamp unit and a cap unit which emits light of a predetermined illuminance value by receiving a constant voltage power from the outside, A new lamp unit (100) for replacing the lamp unit with an LED or a new light source; An amplifier for amplifying the amount of light of the new lamp unit; A power supply unit 140 that operates as an input power source of the lamp and is mounted on one side of the lamp; A sensor unit (110,120) for mounting a microwave sensor module or at least one sensor for sensing a distance to one side of the light; A source unit (130) for mounting at least one source device on one side of the lamp; A microcomputer control unit 15 mounted to one side of the lamp to process signals generated from the sensor unit or the source unit and input / output signals; The rear light sensor interface using the new light source and the microwave sensor module, characterized in that configured to be mounted on one side of the lamp to process the signal sent from the microcomputer control unit 160. The method of claim 1, wherein the rear detection lamp, A rear light sensor interface using a new light source and a microwave sensor module, characterized in that at least one laminated printed circuit board (PCB) is used to efficiently arrange a new light source, a sensor module, and an alarm circuit unit inside the lamp. The method of claim 1, wherein the rear detection lamp, A rear light sensor interface using a new light source and a microwave sensor module, characterized in that the Fresnel lens to the outer surface of the new lamp unit to efficiently transmit the light generated from the new lamp unit. The method of claim 1, wherein the rear detection lamp, An alarm circuit operating in response to a control signal sent from the microcomputer control unit operates with different signals according to a distance and a distance capable of detecting a distance.