KR20040074042A - Backward Microwave Sensor Interface Attached Back Number Use Bolt - Google Patents

Abstract

PURPOSE: A microwave sensor interface is provided to detect the rear of a vehicle by integrating sensors with a bolt for fixing a rear number plate. CONSTITUTION: A groove is formed at the upper center(5) of a bolt for fixing a rear number plate. A rear detecting unit(2) is disposed at the top of the bolt. A terminal unit(8) is formed at one side of the bolt. A power supply unit is installed in the groove. A sensor unit has a microwave sensor module. A micro computer is mounted to one side of the groove.

Description

Backward Microwave Sensor Interface Attached Back Number Use Bolt}

Bolts and screws are widely used to fix automobile license plates, and are widely used as components for fixing automobile axles, fixing parts, and other mechanical equipment.

In general, a sensor or sensing device 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 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 rotational flow rate or flow rate, liquid component, gas component, visible light, infrared, 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 returned 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 respectively, and the frequency bands generated are mostly except for ultrasonic sensors. It is only to use an 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.

In the present invention, hex bolts (hex bolts), bolts and screws used to fix an object are integrated together with a sensor having a sensing function, while a screw or bolt is based on its own tightening function. The technical problem is to configure the rear sensor that can be fixed to the rear license plate of the vehicle can be combined with the rear sensing function.

1 is a generally used hexagonal washer head drawing

2 is a cross-sectional view and a perspective view of replacing the bolt-type microwave rear sensor, which is an embodiment of the present invention with a bolt for fixing a rear license plate of a vehicle;

3 is a cross-sectional view and a perspective view of replacing the screw-type microwave rear sensor, which is an embodiment of the present invention, with the screw for fixing the rear license plate of the vehicle;

Figure 4 is a perspective view of a hexagonal washer head and microwave sensor module, the lead wire according to the present invention

Figure 5 is an illustration of replacing the unsealed bolt or screw portion of the car rear license plate with a rear sensor according to the invention

Figure 6 is a cross-sectional view showing the detection angle when the unsealed bolt portion of the car rear license plate is replaced with the present invention

7 and 8 are block diagrams for explaining the operation of the microwave sensor module

9 is a block diagram illustrating the overall operational flow of the present invention.

〈Code Description for Main Parts〉

1: Hex washer head bolt 2: Rear sensing unit

3: thread of bolt

4 bolt head 5 sensor

6: Sensor detection lead wire 7: Hex section of bolt cap

8 Terminal (sensor connection) 9 Nut or car license plate

15: microcomputer control unit

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

110: RF sensor unit

111: antenna 130: source part

160: device

When explaining the configuration of the invention in the drawings,

1 shows a hexagonal washer head generally used. Hex washer head bolts are one of the most commonly used bolts when mechanical fasteners are required. Especially, hex bolts and caps 7) and the bolt head 4.

2 is a cross-sectional view and a perspective view showing the attachment of the bolt-type microwave rear sensor, which is an embodiment of the present invention, by replacing the bolt for fixing the rear plate of the vehicle, and FIG. 3 is a screw-type microwave rear which is an embodiment of the present invention. This is a cross-sectional view and a perspective view showing the attachment of the detector by replacing it with the rear license plate fixing bolt of the vehicle. Generally, the license plate of the vehicle is fixed by bolts or screws, and the unsealed side of the screws or bolts fixing the rear license plate It is characterized by the use of replacing the screw or bolt of the rear sensor of the present invention.

4 is a perspective view of a hexagonal washer head, a microwave sensor module, and a lead wire according to the present invention, and FIG. 5 is an exemplary view of replacing an unsealed bolt portion of an automobile rear license plate with a rear sensor according to the present invention. 6 is a cross-sectional view illustrating a sensing angle when an unsealed bolt portion of an automobile rear license plate is replaced with the present invention, which may vary depending on the sensing capability of a microwave sensor or another sensor.

7 and 8 are block diagrams for explaining the operation of the microwave sensor module and Figure 9 is a block diagram for explaining the overall operation flow of the present invention.

Figure 4 is a hex washer head and sensor, according to the present invention is a sensor hex bolt-shaped rear sensor diagram consisting of a lead wire, a groove in the upper center (5) of the bolt head to the required sensor module and the alarm sound It is possible to incorporate an additional device to form a hollow bolt portion through which the inside penetrates from the bolt head to the end of the screw thread (3) to penetrate the lead wire of the sensor, and the connection terminal is embedded at the end of the screw thread To finish the lead wires.

In addition, the sensor 5 is formed by digging a groove in a predetermined shape at the center of the upper end of the bolt head, and the lead wire coming out of the sensor drills a hole in one side of the bolt or screw cap end face 7 to take out the lead wire 6. It is done.

At this time, the groove for taking out the lead wire is dug a little so that the connection terminal 8 is built in, the lead wire from the sensor is connected to the terminal, and the lead wire is closed to obtain the power input signal required by the terminal. It is preferable to connect to a power supply wiring in parallel.

Hereinafter, the operation principle of the microwave sensor module,

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.

7 to 8 is a block diagram showing the concept of the operation of the microphone sensor module used in the present invention, the block according to an embodiment schematically showing the RF sensor device and the microcomputer control unit mounted inside the rear sensor. It shows the province,

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 power terminal by the external power supply to the device so that the power can be applied to the inside of the device.Also, each part of the other pin can be connected to the contact point of the signal suitable for the rear sensing light. If used, ensure that the NC contact of the relay is connected to the power terminal block.

At this time, when power is applied to the power terminal block to supply power to the device, the bridge circuit for power is applied to prevent the device from malfunctioning by applying (-) power through the mounting of (+) (-) power terminals. It is additionally provided so that it can be used without distinguishing (+) (-) terminals, and the power applied through the power terminal block is rectified to a predetermined size of power through a voltage regulator, and then maintained. 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 associated with the RF sensor device 110, receives and processes the signal and voltage transmitted to each unit, and then applies the voltage value of the received signal to 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 the vehicle seven times per second so that the driver senses an obstacle and brakes the vehicle. If the obstacle is a person, the person who is in the backward direction of the vehicle after hearing the alarm sound Since this will be avoided voluntarily, it is possible to prevent personnel accidents in advance, and it may be said that it is most desirable to feature them.

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 whether 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. 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.

To sum it up,

In a screw or bolt that fixes the rear license plate of a vehicle, a groove is circularly formed in the upper center 5 of the bolt head, and the sensor module and the alarm sound ring inside the rear sensor unit 2 connected thereto. It is possible to incorporate an additional device, and the rear sensor unit (2) connected to the groove is placed on the top of the bolt head;

A hole is formed in one side of the end face 7 formed in the screw or bolt head to take out the lead wire of the device or to form a terminal 8 part connecting the lead wire to finish;

A hollow bolt portion penetrates from the bolt head to the end of the thread 3 to penetrate the lead wire of the sensor, and the lead wire is taken out from the end of the screw thread or a built-in terminal for connecting the lead wire. Closing,

In the groove of the certain shape and the groove of the rear sensor unit 2,

A power supply unit 140 mounted on one side of the groove or inside the groove of the rear sensor unit 2; Sensor units (110,120) for mounting at least one sensor of a microwave sensor module or other method on one side of the groove; A source unit (130) for mounting at least one source device on one side of the groove; A microcomputer control unit 15 mounted on one side of the groove to process signals generated from the sensor unit or the source unit and input / output signals; It is mounted on one side of the groove is a microwave rear sensor interface using a rear license plate fixing bolt of the vehicle, characterized in that consisting of a device unit 160 for processing a signal sent from the microcomputer control unit.

As described above, the internal structure and operating principle of the microwave rear sensor interface using the rear license plate fixing bolt of the vehicle have been described. However, those skilled in the art will be able to devise another embodiment by modifying the same. It will be apparent that the present invention is not limited only to the examples.

If the present invention can be used for the rear sensing purpose by replacing with bolts or screws used in the license plate of the car without damaging the appearance of the car, it has a beneficial effect as a safety assistance device that can prevent the vehicle backward accident in advance. can see.

Claims (3)

In the screw or bolt which fixes the rear license plate of a vehicle, Digging a circular groove in the upper center 5 of the bolt head; A rear sensor device (2) connected to the groove is placed in the upper part of the bolt head so as to incorporate a sensor module device and an additional device for making an alarm sound; A hole is drilled in one side of the end face 7 formed in the screw or bolt head to take out the lead wire of the device or finish by forming a terminal 8 part connected to the lead wire. Inside the bolt head groove and the groove of the rear sensor unit 2, A power supply unit 140 mounted on one side of the groove; Sensor units (110,120) for mounting at least one sensor of a microwave sensor module or other method on one side of the groove; A source unit (130) for mounting at least one source device on one side of the groove; A microcomputer control unit 15 mounted on one side of the groove to process signals generated from the sensor unit or the source unit and input / output signals; And a device unit (160) mounted on one side of the groove to process a signal sent from the microcomputer control unit. The method of claim 1, wherein the screw or bolt, The device is embedded by digging a groove in the center of the upper end of the screw or bolt head; Forming a hollow bolt portion through which the inside penetrates from the bolt head to the end of the thread (3) and penetrates the lead wire of the apparatus; Microwave rear sensor interface using the rear license plate fixing bolt of the vehicle, characterized in that for removing the lead wire from the end of the thread. The screw or bolt of any one of claims 1, 2 and 3, A microwave rear sensor interface using a rear license plate fixing bolt of a vehicle, which is used by replacing a screw or bolt of an unsealed side of a screw or bolt fixing a license plate at a rear of a vehicle.