JPH0755647Y2 - Taximeter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taxi meter which does not require resetting of a distance correction value even when the head of a meter is replaced due to revision of a boarding fare.

[0002]

2. Description of the Related Art As shown in FIG. 4, a taximeter is a distance signal generator 1 which receives a rotational force from a transmission gear of a vehicle through a flexible cable 3 and generates an electric pulse signal corresponding to the rotation of wheels. And a meter head 2 for calculating and displaying a boarding fare based on the pulse signal, and a pulse signal output from the distance signal generator 1 is sent to the meter head 2 through a signal line 7 to thereby travel distance. In addition, the travel charge is measured. There are various modes of the distance signal generator 1, and for example, the distance signal generator 1 is housed in a case different from the meter head 2 and mounted on the vehicle body side. The configuration is, for example, the type shown in FIG. 5 (a) in which all the distance signal generating functions are housed in the same case, and FIG. 5 (b) in which the pulse generator 1a and the signal converter 1b are separately configured. There is one of the type shown as. For example, as shown in FIG. 5A, a plurality of blades that rotate by the rotational force transmitted from the transmission gear of the vehicle are provided inside the case, and the light emitting element and the light receiving element are sandwiched between the blades. It has a structure arranged opposite to each other, and the mechanical rotation of the transmission gear is converted into an electric pulse signal by the light receiving element. In addition, as shown in FIG. 5B, in the above-mentioned configuration, the portion that converts the mechanical rotational force into the optical pulse signal is separated as the pulse generator 1a, while the optical pulse signal is converted into the electrical pulse signal. The part to be converted is separately configured as the signal converter 1b. In any of these types, the rotation of the mission gear is finally converted into an electrical pulse signal, and the pulse signal is sent to the meter head 2, which calculates the boarding fare based on these pulse signals. It is carried out. Also, although not shown, there is a device that directly converts mechanical rotation into an electrical pulse signal using a Hall element or the like.

The charge calculation based on the pulse signal is performed as follows, for example. The rotation of the mission gear is directly connected to the rotation of the wheels. For example, when one rotation of the mission gear corresponds to a traveling distance of 2 m, it is assumed that two pulse signals are generated corresponding to one rotation of the mission gear. For example, the distance corresponding to one pulse is 1 m, and the traveling distance can be calculated by counting the number of pulses. The number of distances that can be traveled at the basic fare and the distance that can be traveled are determined by the subsequent fare, so every time there is one pulse input, first subtract 1 m from the value of the basic distance, and if the basic distance becomes zero, the basic distance After judging that the minute has been completed, add the subsequent fare and at the same time read the distance thereafter, and thereafter subtract 1 m from the distance each time one pulse is counted, and the subsequent distance becomes zero So I'm trying to add the following charges. In the above explanation, one rotation of the mission gear corresponds to 2 m exactly,
Actually, depending on the individual vehicle, the tire diameter and tire wear,
Furthermore, since the tire type is different, the effective circumference of the tire differs from vehicle to vehicle, and therefore one revolution of the mission gear rarely exactly corresponds to 2 m, and the mileage per revolution is corrected. There is a need. In addition, since there is a principle that passengers' disadvantages must be absolutely avoided when calculating the fare, it is common practice to set the basic distance and the following distances to within a 4% error. In this sense, correction work is indispensable.

The correction method is usually carried out by setting the rotation speed of the transmission gear required for traveling 1000 m on the meter head. For example, the reference rotation speed is 50.
If the target vehicle requires 550 rotations to travel 1000 meters, the target vehicle is required to add 50 rotations, which is the difference from the reference value. The meter head calculates the distance per pulse based on 550 rotations and measures the distance based on this. Conventionally, such a distance correction is performed by combining ON / OFF states of respective switches of a distance correction value setting device 4 including a dip switch array incorporated in the meter head 2 as shown in FIG. There is. This distance correction is performed at the time of regular verification, and after the verification, the accuracy of the taxi meter is guaranteed by sealing the taxi meter head until the next verification.

[0005]

As described above, the taximeter mounted on each vehicle has a correction value corresponding to the vehicle set by the distance correction value setting device incorporated in the head of the meter. Unless the head is replaced, the accuracy can be maintained almost until the next test is performed.

By the way, the taxi fare may be revised, but the conventional taxi meter described above has a problem when the fare is revised. That is, at the time of price revision, it is necessary to remove the meter head from the vehicle body and replace the PROM etc. in which the price information is written, but this work requires a certain period, so the same day or the next day A separate head of the meter, which has already been modified, is attached to the running vehicle. However, as described above, each vehicle has a distance correction value unique to each vehicle, and this correction value is set by the distance correction value setter incorporated in the meter head. Therefore, when replacing the meter head, It is extremely complicated because it is necessary to match the distance correction value of the meter head after replacement with the distance correction value of the meter head before replacement. In addition, the distance correction value is set by operating a small group of switches such as a DIP switch, and therefore the setting may be erroneous. In this case, the vehicle runs in an improper state until the next verification. The present invention has been made in view of the present situation, and eliminates the need for resetting the distance correction value, which was necessary after the replacement work of the meter head at the time of price revision, and improves the efficiency of the replacement work of the meter head. At the same time, it aims to provide a taximeter that eliminates the need for resetting work and completely eliminates the occurrence of setting errors that were associated with resetting work.

[0007]

In order to solve such a problem, the inventor of the present invention separates a distance correction value setting device, which has been conventionally incorporated in a meter head, from the meter head, and Separately configured, the distance correction value setting device is fixed to the vehicle body side to be integrated with the vehicle and the distance correction value setting device is set.
We devised a taximeter that can seal a fixed device .

Although the distance correction value setting device can be housed in a separate case, it may be housed together in a case that covers the distance signal generator.

[0009]

In the taximeter having such a structure, the distance correction value setting device is provided outside the meter head in a state of being fixed to the vehicle body, so that the meter head is simply replaced when the charge is revised. The distance correction value need not be reset at all. Also, the distance correction value setting device is sealed
It is not possible to change the setting value of the distance correction value setter for illegal purposes.
Can not.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, details of the present invention will be explained based on illustrated embodiments. FIG. 1 is an explanatory view showing the outline of the taximeter of the present invention. The present invention is characterized in that the distance correction value setting device 4 is separately provided outside the meter head 2 and is provided on the vehicle body side. It is preferable that the distance correction value setting device 4 is housed together in a case that houses the distance signal generator 1 as shown in the figure. Although not shown, when the distance signal generator 1 is composed of a pulse generator and a signal converter, the distance correction value setting device 4 is housed in any case that covers the pulse generator and the signal converter. It is also optional to do so. Further, a dedicated case is separately provided without being installed in these existing cases, and the distance correction value setting device 4 is provided in this case.
Of course, it is possible to decorate. What is important is that the distance correction value setting device 4 is configured separately from the meter head 2 and is fixed to the vehicle body side.

FIG. 2 shows a state in which the distance correction value setting device 4 is housed in a case that covers the distance signal generator 1. An opening 5 that can be sealed after closing is provided in the side wall of the case, and the distance correction is performed in the opening 5. This is a case where a dip switch array as the value setting device 4 is incorporated. In the figure, 7 is a signal line for sending the pulse signal output from the distance signal generator 1 to the meter head 2.
In the figure, 6 is a transmission line for transmitting the contents of the distance correction value setting device 4 to the meter head 2. There are various transmission line configurations,
For example, when the distance correction value setting device 4 is composed of only a mechanical switch group such as a dip switch array, a large number of transmission lines are required in correspondence with the number of dip switches as shown in FIG. When the correction value setter 4 is a microcomputer built-in type and can communicate with the meter head 2, the number can be reduced by adopting serial transmission or the like.

The distance correction in the taximeter of the present invention having such a structure is performed by adjusting the distance correction value setting device 5 mounted on the vehicle body side, and the specific correction procedure is the conventional meter head. This is the same as the adjustment procedure of the distance correction value setting device built into the unit. The distance correction value set in this way is read out and used by a command from the meter head 2 when necessary.

In the taximeter of the present invention, the distance correction value setting device is provided on the vehicle body side and integrated with the vehicle body so that it can be continuously used even when the meter head is replaced. It is not necessary to match the set value of the newly installed meter head with the set value of the meter head before replacement. Further, since the setting work itself is unnecessary, there is no occurrence of setting mistakes, and there is no problem of running with an illegal fee until the next verification.

[0014]

In the taximeter of the present invention, the distance correction value setting device is constructed separately from the meter head, and the distance correction value setting device is fixed to the vehicle body side to be integrated with the vehicle.
Since the distance correction value setting device can be sealed, it is possible to eliminate the need for setting the distance correction value, which has always been necessary when replacing the meter head. And distance correction value setting device
Is sealed, so change its settings for malicious purposes
Is impossible, and a distance correction value setting device is
As a conventional taxi meter housed,
Accuracy is guaranteed. Therefore, it is possible to replace the meter head used in the same area that uses the same tariff system without adjustment, and it is possible to greatly rationalize the replacement work of the meter head. Also, since the setting operation of the distance correction value setting device itself is not necessary, it is possible to completely eliminate the occurrence of setting errors, so it is possible to run without noticing the setting errors until the next verification as in the past. Absent.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a taximeter of the present invention.

FIG. 2 is an explanatory diagram showing a main part of the embodiment.

FIG. 3 is a block diagram showing an outline of the embodiment.

FIG. 4 is an explanatory diagram showing a conventional taximeter.

5A and 5B are block diagrams showing modes of a distance signal generator in a taximeter.

FIG. 6 is an explanatory view showing a main part of a conventional taximeter.

[Explanation of symbols]

 1 Distance signal generator 1a Optical pulse generator 1b Signal converter 2 Meter head 3 Flexible cable 4 Distance correction value setter 5 Opening 6 Transmission line 7 Signal line

Claims (2)

[Scope of utility model registration request] 1. A distance signal generator mounted on a vehicle body side for receiving an electric force transmitted from a transmission gear of a vehicle and generating an electric pulse signal corresponding to the rotation of wheels, and a distance signal generator based on the pulse signal. A meter head that calculates and displays the boarding fare, and a distance correction value setting device that can set the difference between the rotation speed necessary for traveling a predetermined distance in an individual vehicle and the standard rotation speed registered in the meter head as a correction value. In the taxi meter having the above, the distance correction value setting device, which is configured separately from the head of the meter, is fixed to the vehicle body side and integrated with the vehicle, and the distance correction value setting device is
A taximeter that can be sealed . 2. The taximeter according to claim 1, wherein the distance correction value setting device is housed together in a case for housing the distance signal generator.