JP3362460B2 - Running condition detection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling state detecting device for detecting a traveling state of a moving body traveling with rotation of wheels, such as a bicycle. 2. Description of the Related Art Conventionally, in a bicycle, for example, there has been known a device called a cycle computer which detects a rotation state of wheels, calculates a traveling speed, a traveling distance, and the like, and displays the calculated traveling speed and traveling distance in real time. That is, this cycle computer is provided with, for example, a magnetic detection unit and a transmission unit adjacent to the rotation trajectory of a magnet attached to a spoke of a front wheel, and a rotation detection pulse signal transmitted from the transmission unit every time the front wheel makes one rotation. Is received by the receiver attached to the handle. [0003] Based on the rotation detection pulse signal received by the receiving unit, the wheel size stored in advance, and the elapsed time obtained by a timer or the like, the current traveling speed and traveling distance are calculated and displayed. Display in the section. Thereby, the occupant of the bicycle can know the running state in real time. [0004] However, in the above-mentioned conventional cycle computer, there is a possibility that the mounting positions of the magnets mounted on the spokes of the wheels may be shifted. There is also a problem that the rotation of the wheels is not detected even when the bicycle is actually running, and the calculation and display of the running speed and the running distance are interrupted. [0005] The present invention has been made in view of the above problems,
It is an object of the present invention to provide a traveling state detection device that can calculate and display the current traveling state even when the rotation of a wheel is not detected during actual traveling. That is, a traveling state detecting device according to the present invention comprises a rotating state detecting means for detecting a signal corresponding to the rotation of a wheel, and a rotational state detected by the rotating state detecting means. Running state calculating means for calculating a running state based on the detection signal, stop notifying means for notifying that the rotation detection signal of the wheel by the rotation state detecting means has stopped, and operating when the rotation of the wheel is stopped. If the stop operation by the stop operation means is not performed after the stop of the rotation detection of the wheel is notified by the notification means, the rotation state detection means immediately before the stop notification by the notification means. A non-rotation detection-time traveling state calculation means for calculating a traveling state based on the detected rotation detection signal; a non-rotation-detection traveling state calculation means; Display means for displaying the running state calculated by the means. In other words, if the stop operation is not performed by the stop operation means in spite of the fact that the stop of the rotation detection of the wheel is notified by the above-mentioned notification means, the rotation is detected by the displacement of the magnet or the like. It is determined that the vehicle is not traveling, and the running state is continuously calculated based on the rotation detection signal detected by the rotation state detecting means immediately before the rotation detection stops, that is, immediately before the stop notification by the notification means. Will be done. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a bicycle 1 on which a traveling state detecting device of the present invention is mounted. FIG. 2 is a front view showing an external configuration of a transmitter and a receiver of the traveling state detecting device. A magnet 4 is attached to a spoke 3 of a front wheel 2 provided on the bicycle 1. On the other hand, a transmitter 6 is fixed to the body 5 of the bicycle 1 outside the rotation trajectory of the magnet 4, and a receiver 7 is attached to a handle 5 a of information of the transmitter 6. An LCD display section 8 is provided on the upper surface of the receiver 7, and a size input key 9 for inputting a tire size of the bicycle is provided around the LCD display section 8, which is operated when the running of the bicycle 1 is stopped. Travel selection key 10, display selection key 11, which is operated when selecting a display mode,
Reset key 12 operated when resetting operation
Are provided. FIG. 3 is a circuit diagram showing the transmitter 6 in the traveling state detecting device. The transmitter 6 is provided with a reed switch 13. The reed switch 13
It is normally off, and is turned on when the magnet 4 passes inside the transmitter 6 with the rotation of the front wheel 2, and outputs a reed switch signal a to the detection circuit 14. The detection circuit 14 includes an oscillation circuit 15 therein, converts the read switch signal a from the reed switch 13 into a continuous clock signal b when it receives the reed switch signal a, and outputs the clock signal b via a resistor 18 to the NPN transistor 19. Send to base terminal. A capacitor 20 is connected between the collector terminal and the emitter terminal of the transistor 19, the collector terminal is connected to one end of the electromagnetic induction coil 21, and the emitter terminal is connected to the detection circuit 14. A voltage Vcc is applied to the other end of the electromagnetic induction coil 21 and one end of the capacitor 22 via a resistor 23, and the other end of the capacitor 22 is connected to the emitter terminal of the transistor 19. Therefore, when the clock signal b is supplied to the transistor 19, the electromagnetic induction coil 21 outputs an electromagnetic induction signal. FIG. 4 is a block diagram showing the internal configuration of the receiver 7 in the traveling state detecting device. FIG. 5 is a diagram showing a data storage state of the RAM provided in the receiver 7 of the traveling state detecting device. The electromagnetic induction by the electromagnetic induction coil 21 of the transmitter 6 is transmitted to the detection circuit 24 by the capacitor 2.
The frequency is selected and received by an electromagnetic induction coil 26 connected in parallel with 5, pulse-coded by a detection circuit 24, and sent to a microcomputer 27. The microcomputer 27 has a work RAM and a program ROM (not shown). The microcomputer 27 controls the entire receiver 7 in accordance with a signal from the detection circuit 24 and signals from the keys 9 to 12, and controls the LCD 7 as well. The display control of the display unit 8 and the sound notification control of the sound notification device 28 are performed. Further, the microcomputer 27 also performs time counting processing based on the oscillation signal from the crystal oscillation circuit 29. As shown in FIG. 5, the work RAM 30 of the microcomputer 27 has a clock register 30a for storing clock data, a travel speed register 30b for storing the travel speed, and a total travel for storing the total travel distance. A distance register 30c, a traveling distance register 30d for storing a traveling distance per second, and a tire size register 30e for storing a tire size are provided. Next, the operation of the traveling state detecting device having the above configuration will be described. FIG. 6 is a timing chart showing the operation of the transmitter and the receiver by the traveling state detecting device. That is, when the traveling of the bicycle 1 is started and the front wheel 2 rotates and the magnet 4 passes inside the transmitter 6, the reed switch 13 provided in the transmitter 6 is turned on, and as shown in FIG. , A reed switch signal a is generated. Then, the detection circuit 14 outputs a clock signal b of a predetermined cycle, and the transistor 19 repeatedly turns on and off for a very short time. As a result, a resonance pulse (electromagnetic induction signal) is output from the electromagnetic induction coil 21 of the transmitter 6 for a very short time immediately after the passage of the magnet 4. Then, when a resonance pulse is output from the electromagnetic induction coil 21 of the transmitter 6, the reception signal d is generated by the electromagnetic induction action of the electromagnetic induction coil 26 of the receiver 7 and input to the detection circuit 24. Then, the detection circuit 24 generates a comparator output corresponding to a level equal to or higher than the threshold value Vth of the reception signal d by a built-in comparator, and generates a pulse reception signal e having a high level during the output of the comparator output. Generate Therefore, this pulse reception signal e is
As shown in the lowermost part in FIG. 6, the timing at which the front wheel 2 makes one rotation and the magnet 4 passes inside the transmitter 6, that is, is input to the microcomputer 27 every one rotation of the front wheel 2, 27 measures the interval of the pulse reception signal e. The microcomputer 27 executes a running state calculation display process each time the pulse reception signal e is input. FIG. 7 is a flowchart showing a running state calculation display process in the receiver 7 of the running state detecting device. That is, as the bicycle 1 travels, the front wheels 2
The microcomputer 27 of the receiver 7 every time the motor rotates once.
When the rotation detection pulse reception signal e is input (step S1), the current traveling speed of the bicycle 1 and the current running speed of the bicycle 1 are determined based on the input time interval of the pulse reception signal e and the tire size stored in the work RAM 30 in advance. The total mileage is calculated (step S2), and the mileage per second is also calculated and stored in the mileage register 30b, the mileage register 30c, and the mileage register 30d in the work RAM 30, respectively ( Step S3). According to the data stored in the work RAM 30, the current traveling speed and the total traveling distance
It is displayed on the D display unit 8 (step S4). Here, the rotation detection pulse reception signal e is the microcomputer 2
The rotation detection operation has stopped due to whether or not the time not input to 7 has continued for a predetermined time (for example, 5 seconds), that is, the traveling of the bicycle 1 has been stopped, or the magnet 4 attached to the front wheel 2 has been displaced. It is determined whether the state has continued for a certain period of time (step S5). If it is determined "No" in step S5, that is, it is determined that the bicycle 1 is in a normal rotation detection state in accordance with the running of the bicycle 1, the rotation detection pulse reception signal e input to the microcomputer 27 again is used. The current traveling speed and the total traveling distance of the bicycle 1 are newly calculated, and the traveling distance per second is also newly calculated.
The traveling speed register 30b, the total traveling distance register 30c, and the traveling distance register 30d in the work RAM 30 are updated and stored (steps S1 to S3). Then, according to the updated storage data in the work RAM 30, the current traveling speed and the total traveling distance are displayed on the LCD display section 8 (step S4). FIG. 8 is a timing chart showing operation timings in accordance with a change in the input of the rotation detection pulse reception signal e in the traveling state detection device. That is, as the rotation detection pulse reception signals e of the front wheels 2 are sequentially input, steps S1 to S1 are performed.
If the process of S5 is repeated and the various running states are sequentially calculated, updated and stored and displayed, and the pulse reception signal e is not input to the microcomputer 27 for a certain period of time (for example, 5 seconds), In step S5, the sound detection device 28 notifies the stop state of the rotation detection (step S6).
If the travel stop key 10 is operated within seconds),
It is determined that the traveling has been stopped intentionally by the user, and the process ends with the various traveling states stored and displayed when the rotation pulse reception signal e is no longer obtained (step S7).
→ END). On the other hand, in step S7, "N
o ”, that is, after the sound processing for stopping the rotation detection by the sounding device 28, the travel stop key 10 is not operated within a certain time (for example, 5 seconds), and the running of the front wheel 2 is not determined. When it is determined that the rotation detection operation has failed due to the occurrence of a device failure such as a displacement of the magnet 4 attached to the work RAM 30 (step S7), the work RAM 30 is operated in accordance with the pulse reception signal e immediately before the stop of the rotation detection. Based on the latest travel distance per second (for example, 8 m) updated and stored in the travel distance register 30d within the above-mentioned step S5.
To blank time after stopping rotation detection in S7 (in this case, 1
(0 m) is calculated and added to and stored in the total travel distance immediately before the stop of rotation detection stored in the total travel distance register 30c (step S8).
→ S9), the updated display is made on the LCD display section 8 (step S10). Thereafter, if the travel stop key 10 is not operated (step S11), it is determined that the bicycle 1 is continuously traveling, although the rotation detecting operation is inferior, and the traveling distance register is determined. The travel distance per second immediately before the stop of the rotation detection stored in 30d (8
m), the total mileage is added and updated at regular intervals (for example, one second) and stored and displayed (steps S8 to S8).
S11). When the travel stop key 10 is operated, it is determined that the travel is intentionally stopped by the user, and the process is terminated while various traveling states at the time of operation of the stop key 10 are stored and displayed ( Step S11 → END). As a result, even when the rotation detection operation is defective due to, for example, a displacement of the magnet 4 attached to the front wheel 2, the total traveling distance is continuously updated and displayed while the vehicle is traveling. Therefore, according to the traveling state detecting device having the above-described configuration, the rotation detection signal of the front wheels 2 transmitted from the transmitter 6 is supplied to the microcomputer 27 via the electromagnetic induction coil 26 and the detection circuit 24, and the traveling speed is detected. , The total mileage and the mileage per second are calculated and the work RAM 30 is calculated.
If the rotation detection signal is no longer obtained, the sound detector 28 notifies the user of the stoppage of the rotation detection after a lapse of a certain time, and furthermore, the user is notified by the lapse of the certain time. When the travel stop key 10 is operated, it is determined that the travel of the bicycle 1 is intentionally stopped, and the processing is terminated. On the other hand, the travel stop key 10 is operated by a certain time after the rotation detection stop notification processing. Otherwise, the rotation detection operation is determined to be defective, and the total travel distance is added and updated based on the travel distance per second immediately before the stop of the rotation detection operation. Therefore, the stop state of the rotation detection is intentionally performed by the user. It is possible to determine whether the failure is due to a device failure or a device failure, and to continuously calculate and display the traveling distance even when the device failure occurs. As described above, according to the present invention, the rotation state detecting means for detecting a signal corresponding to the rotation of the wheel, and the running state based on the rotation detection signal detected by the rotation state detecting means. Traveling state calculating means for calculating the rotation state detecting means, stop notification means for notifying that the rotation detection of the wheel has stopped, stop operation means operated when the rotation of the wheel is stopped, If the stop operation by the stop operation unit is not performed after the stop of the rotation detection of the wheel is notified by the notification unit, the rotation detection signal detected by the rotation state detection unit immediately before the stop notification by the notification unit is performed. A driving state calculating means for calculating the driving state based on the non-rotational state, and a display means for displaying the driving state. Even when the rotation of the wheel cannot be detected due to a shift of the means or the like, the current running state can be calculated and displayed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a bicycle equipped with a traveling state detection device according to one embodiment of the present invention. FIG. 2 is a front view showing an external configuration of a transmitter and a receiver of the traveling state detecting device. FIG. 3 is a circuit diagram showing an internal configuration of a transmitter in the traveling state detection device. FIG. 4 is a block diagram showing an internal configuration of a receiver in the traveling state detection device. FIG. 5 is a diagram illustrating an R included in a receiver of the traveling state detecting device.
The figure which shows the data storage state of AM. FIG. 6 is a timing chart showing operations of a transmitter and a receiver by the traveling state detection device. FIG. 7 is a flowchart showing a running state calculation display process in the receiver of the running state detecting device. FIG. 8 is a timing chart showing operation timings in response to a change in input of a rotation detection pulse reception signal in the traveling state detection device. [Explanation of Signs] 1 ... bicycle, 2 ... front wheel, 3 ... spoke, 4 ... magnet, 5 ...
Body, 6 ... Transmitter, 7 ... Receiver, 8 ... LCD display, 9
... Size input key, 10 ... Stop key, 11 ... Display selection key, 12 ... Reset key, 13 ... Reed switch,
14 detection circuit, 15 oscillation circuit, 20, 22, 25 ...
Capacitors, 18, 23 ... resistors, 19 ... transistors,
21, 26 ... electromagnetic induction coil, 24 ... detection circuit, 27 ...
Microcomputer, 28 ... Sound emitting device, 29 ... Crystal oscillation circuit, 30 ... Work RAM.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62M 25/00 B62J 39/00 G01P 3/487

Claims (1)

(57) [Claim 1] A rotation state detecting means for detecting a signal corresponding to the rotation of a wheel, and a driving state calculated based on a rotation detection signal detected by the rotation state detecting means. (1) running state calculation means, stop notification means for notifying that the rotation detection signal of the wheel by the rotation state detection means has stopped, stop operation means operated when the rotation of the wheel is stopped, If the stop operation by the stop operation unit is not performed after the notification of the stop of the rotation detection of the wheel is notified by the notification unit, the driving state is calculated using the data of the driving state before the stop notification by the notification unit. 2. A traveling state detection device, comprising: