JPH07113644B2 - Driving recorder for automobile - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to at least one indicating element or pointer, which is driven by a step motor for indicating a speed on the speed scale scale, and the measured value forming and A microprocessor having a memory used for controlling the step motor, and a device for indicating and inputting a value used for calibration or adaptation of the running recorder by using the measurement and indicating means of the running recorder. A driving recorder for motor vehicles equipped with the driving recorder, wherein the indication of the values used for the calibration or adaptation is independent of the indication that depends on the measured value.

PRIOR ART In conventional travel recorders driven by mechanical rotary motion, the adaptation or adaptation of the instrument or device to the vehicle or its engine is realized as a specific structural unit consisting of replaceable gears. It was customary to use a compensating transmission system. As is known, the speed of rotation of a transmission or a wheel for a given distance is different for each type of vehicle, while on the other hand, a device attached to these vehicles for recording or displaying the value of the transmission or the wheel or engine speed, For example, the odometer is calibrated during operation for a uniform input speed and is only adapted to the vehicle of the relevant type when the recorder is later installed in the vehicle.

According to the problems to be solved by the invention, in the conventional operation recorder and tachometer driven by mechanical rotary motion, not only is it considerably expensive to install these devices, but also the operation recorder Upon coupling, the transmission ratio of the transmission or engine output shaft specified by the manufacturer is not equal in all vehicles of the same type, in connection with the fact that the vehicle may be equipped with different tires. It is noticeable.
Therefore, in practice, each measuring instrument must be individually adapted or adapted to the vehicle in the installed state, and in that case the manufacturer's instructions regarding the transmission or engine output speed are simply It was normal that it had to be imitated as an approximate value.

Due to the above circumstances, a rolling test stand is installed in the factory, and expensive measuring equipment is used to adjust and set the above-mentioned instrument already installed to the specific speed or speed set by the rolling test stand. Is proposed.

However, in small factories that are not equipped with rolling test stands, the adaptation of the operation recorder or the revolution recording disk to the vehicle is carried out by running the vehicle over a certain measuring section and obtaining the resulting rotation. It was adapted by number.

Recently, a trip recorder equipped with an electrical measuring mechanism or unit and an electrically driven "axis" has been proposed. This operation recorder has the advantage that it can be easily installed. Because the laying of electrical conductors or cables is less difficult than the installation of mechanical drive shafts, on the other hand, the electrical travel recorder is internally adapted to be adaptable or assimilar to the vehicle. This is because a special adaptive compensating transmission can be constructed and is no longer required.

However, the conventional electric measuring device is an analog measuring device, and the vehicle is adapted by setting the potentiometer to a voltage value corresponding to the conforming value. In order to ensure the adaptation compensation, it is necessary to use a diagnostic device which produces a digital representation of the conversion factors in order to be able to determine that the instrumentation of the measuring device to the vehicle has been carried out correctly.

In the case of digitally operated vehicle instruments, for example a taximeter, the adaptation of the instrument to the vehicle already requires the adaptation value to be digitally applied via an externally input pulse train or via contacts arranged in the instrument. Input is being performed. However, in order to control the correct entry of values, it is advantageous to provide the taximeter also with a digital display so that the adapted values entered can be digitally visualized on this display means.

However, the above cannot be realized in the operation recorder including the display unit and the recording unit that operate in an analog manner. This is because it is impossible to control the optimized value for the output value of the input value at the time of input using the electric digital display device and as necessary.

Therefore, an object of the present invention is to make an operation recorder having an analog measuring display means and a recording means equipped with an electric measuring mechanism and an electric "axis" compatible with a vehicle,
The use of special diagnostic equipment is then unnecessary.

Means to solve the problem As a premise for that, not only it is possible to input the "rotational value" of the vehicle via a normal drive, but also to store the adapted value required from it, first, Make the stored adaptation values visible, i.e. displayable,
It is intended that the adapted value can be entered directly. Visualizing the stored adaptation values in this way enables the factory operator or inspector to control or monitor the correct adaptation. Also, entering the correct adaptation value facilitates the adaptation process or process. By inputting the adaptation value instructed by the manufacturer, it is possible to adapt or assimilate in advance in the above manner, and to individually adapt the operation recorder to the vehicle with a slight modification. It will be possible.

In short, the object or object of the present invention is to arrange a running recorder equipped with an analog indicator and a microprocessor-controlled digital measuring device as follows, that is, in addition to the running recorder, It is arranged to be used also as a diagnostic (diagnosis) device for calculating and instructing an adaptation coefficient used for calibration or adaptation unique to each vehicle.

Means for Solving the Problems According to the present invention for solving the above problems, a traveling recorder of the type described at the beginning is provided with a special pulse generator for generating a predetermined special pulse, and Depending on the special pulse, a displacement of the movement of the sway of the recording means or the indicating means is generated, and the displacement of the movement of the sway is, when inputting the value, correspondingly to the predetermined position to be input. It is configured to be automatically interrupted at the predetermined position corresponding to the corresponding output when the value output is performed, and the step motor is controlled by the specific special pulse train described above. A trigger key for triggering the operation is provided, and is configured to perform a resetting operation of the speedometer pointer and a displacement between the zero position and the full scale position via the trigger key. Further, the value or code number is assigned to the value at the tenth or tenth digit position of the speed scale scale, and the operation of the following a), b) and / or c) is assigned to the value or code number. Address-number information or address-code number code for input / output and / or automatic detection (calculation) as numbers and code information necessary for process execution processing are assigned in a corresponding relationship, that is, a). Automatic detection or calculation of conversion factor for speed, distance and rotation value (automatic detection of adaptation coefficient, automatic rotation speed detection) b) Output operation process for the already stored adaptation value for the relevant distance and rotation value c) The number or code number is assigned as the number or code information necessary for the operation process execution process of the input operation process for each of the above values. The serial identification number or address-code number is used as an address for controlling an input operation process or an output operation process in the memory provided in the above microprocessor, and further, the corresponding number or code information to be instructed. When the (position) is reached, the control of the step motor is interrupted by the microprocessor, the step motor is reset to the zero position, and it is newly controlled to start the numerical value and code information of the value to be instructed next. It is configured as follows.

The action input and output operation is such that, with respect to the input or output of the numerical value “5”, the display or indicating means of the operation recorder is guided to the position “50 km / hour” and / or held at this position, and the numerical value “7” is displayed. For an input or output of "", it is guided and held up to position "70 km / h", and for example for an input or output of the value "0" position "100 km / h".
It is controlled so that it can be guided to and held at "time".

In order to prevent the repetition frequency of the special pulse train that drives the display or support means to the value input or value output position via the step motor from lowering in the process, display means such as 30 Km / hour, 40 Km / hour, etc. There is proposed a control in which the support means is restrained or held for a short time at the input or output position and the output value can be read or the value can be easily input by the special opening / closing means.

When it is desired to prohibit the movement of the recording means in the input and output control operation for the adapted value, the transmission part provided between the display means and the recording means is provided with an electromagnetically openable / closable clutch. You can choose not to record the value or the entered value.

At the beginning of each adaptation process, the display or indicating means of the odometer is first swung by the special pulse train only step by step through all the display positions, where the operator will carry out It is possible to instruct the apparatus to perform such operations as, for example, display of a moderately adapted value that has already been set and input of an adapted value of the engine speed.

The present invention will be described in detail below with reference to the accompanying drawings.

As is clear from FIG. 1, a microprocessor 1 for receiving an internal clock from a clock generator 2 is provided in an electric measuring section of a running recorder (also referred to as an operation recorder). Furthermore, a system memory 3 in the form of a ROM or EPROM and an input port 4 and an output port 5 are provided. Any number of pushbutton switches T _{1 to} T ₄ can be connected to the input port 4, only a part of which is used for controlling the device according to the invention,
On the other hand, other push-button switches are used for other purposes, such as controlling running time recorders.

The input port 4 is also provided with generators G ₁ , G ₂ such as, for example, a mileage generator and an engine speed generator or also a fuel consumption generator, for example when a fuel consumption meter is connected to an operation recorder. G ₃ is connected. Output port 5 is
It is connected to a step motor 7 via a drive stage 6.
The function of the stepper motor is to drive the indicating means 10 in the form of a pointer via its output shaft 8 and the transmission mechanism 9 and, on the other hand, via the gear 11 and the rack 12 the measured values to the diagram disc ( Drive recording means in the form of a recording pen 13 for recording (not shown for clarity of illustration). The pointer 10 is a normal speed pointer, and indicates or displays a speed between 0 km / h and 120 km / h, for example, on the dial 14 during normal operation. A mechanical connection is made between the transmission 9 or the pointer 10 and the gear 11, which mechanical connection is indicated by the two shafts 15 and 16. However, it will be appreciated that such mechanical connections may be realized in other correspondingly suitable forms using other mechanical components. The transmission unit 9 includes an electromagnet 17
It is constituted by a clutch that can be engaged and disengaged by means of the clutch, and cuts off the connection between the transmission portion 9 and the gear 11 so that the step motor 7 is connected via the output shaft 8, the transmission portion 9 and the connection shaft 15. It is possible to drive only the pointer 10 and hold the recording pin 13 in a resting state. The electrical measuring section of the operation recorder including the processor 1, the system memory 3, the input port 4 and the output port 5 are interconnected via the address bus conductor B ₁ and the data bus conductor B ₂ .

In normal operation, the generators G ₁ to G ₃ generate pulses corresponding to the distance traveled, the engine speed, etc. These pulse signals or values are received by the processor 1 and converted by a set constant which is an adaptation value for the vehicle. In this way, the target speed is obtained and stored as a target value in the processor. at the same time,
The processor has an instantaneous measured speed that is displayed or recorded during measurement value processing, that is, the position of the pointer 10 and the recording pen.
The 13 positions are recorded as the measured speed. The processor then compares the target value with the measured value. From this comparison,
A set value for the step motor is obtained, which set value is fed to the step motor 7 via the output port 5 and the drive stage 6. Then, the step motor displaces the pointer 10 and the recording pen 13 by the number of steps in which the measured speed value and the target value match each other.

In view of the object of the present invention, as shown in FIG. 1, three pushbuttons T ₁ to T ₃ projecting from the front panel are provided, these pushbutton switches being electrically connected to the input port 4. . These push button switches are provided in addition to other push button switches provided for other purposes, and the present invention allows inputting a value to the operation recorder or a value from the operation recorder. It is a component of the device for outputting.

The system memory 3 is not only a control command for the processing of the input measured values of the generators G ₁ , G ₂ , G ₃ but also a special memory for carrying out the method for inputting values and outputting values according to the invention. It also stores the program part. The push button switches T ₁ to T ₃ are so-called special opening / closing means, and the button switch T ₁ is adapted for starting the corresponding program part stored in the system memory 3 from the normal measurement value processing. Used to switch to a process. Pushbutton switch T ₁ must be opened and closed. That is,
This push-button switch remains pressed for the duration of the adaptation process and must be manually opened again. Pushbutton switch T ₂
The pushbutton switch T ₃ is for performing a value input process and is a switch for activating the measurement process for the purpose of adaptation during the acquisition of measured values.

How the process proceeds will now be described with particular reference to FIGS. 2A and 2B. Therefore, prior to the description, it should be added that in the device configuration according to the present invention, the special pulse train is generated by the microphone processor 1 and the clock generator 2 when the start command is generated by the push button switch T ₁ . This pulse train is supplied to the step motor 7 via the output port 5 and the drive stage 6, and is used to displace the pointer 10 once from the zero stopper position to the full case position. In this case, the step motor moves the pointer from zero to the 10 Km / h position in the first 10 steps and then in the next 10 steps of 10 Km.
Move from the m / h position to the 20 Km / h position and then move the pointer in the same way. To facilitate the input and output of values, a special pulse train is provided by the processor for each 10 step motor 7.
Is cut off after each step, and the pointer is 40 km each.
It is preferable to stop for a short time at a position such as / hour, 80 km / hour or the like.

Now, with reference to FIGS. 2A and 2B, an operation process or process steps of the traveling recorder according to the present invention will be described in detail. In the running recorder of the present invention, it is necessary to distinguish the detection or calculation operation and the input and output operations into the following three large groups.

a) A series of operating processes or processing steps for automatic detection or calculation of conversion factors for speed, distance and rotational speed.

b) A set of output operating processes or processing steps for the adaptation values already calculated for the distance and the rotational speed.

c) Input operation process or processing steps for these values.

In the device configuration of the present invention, code numbers are associated (assigned) to each of these operation processes or processing steps or the detection and calculation in the following order, for example.

1. Automatic detection of adaptation factors for speed and distance using a rolling test stand.

2. Automatic detection of adaptation factors for speed v and distance s due to running on the test section.

3. Automatic rotation speed detection using a stroboscope.

4. Enter speed adaptation factor.

5. Display of speed adaptation factor.

6. Enter the speed adaptation factor.

7. Display of speed adaptation coefficient.

8. and 9. Save code number for another functional test.

From the above description with respect to code numbers 1 to 9 it will be understood the correspondence with the three groups or phases a) to c) mentioned above. That is, code numbers 1 to 3 mean the detection of the adaptation value according to group or phase a), while code number 4
And 6 represent the digital inputs of the known adaptation values in phase c), and code numbers 5 and 7 represent the outputs of the adaptation values set for the device in group or phase b).

Referring to FIG. 2A, the system program 100 stored in the system memory 3 is the starting point of the process step. As usual, in step 101, measurement value processing is performed. In this case, push button T
Via ₁ (code "1" in step 102) it is possible to give an instruction to detect, display or output the adaptation value. In the novel construction of the device according to the invention, no adaptation value is initially detected, so step 10
The mode code number as to whether the detection or acquisition process a) (code numbers 1 to 3 above), the output process b) (code numbers 5 and 7) or also the input process (code numbers 4 and 6) should be performed at 3 Identify "?". However, it will be appreciated that in the device of the novel structure of the present invention, there is no code number, and as a result code 0 is equivalent to the input process. There, the process steps as shown in Figure 2B are carried out. At step 105, the code number (0 in this case) sets the memory in processor 1 to receive the code number. Then the processor goes to step 10.
Generates a special pulse train as shown in 6. With this special pulse train, the step motor 7 is driven so as to run at 0 to 10 Km / hour, 20 Km / hour, 30 Km / hour, and so on. Therefore, it is assumed that the rolling test stand is used to detect the velocity value and the distance value. Therefore, the operator presses the push button T ₂ when the display device 10 Km / hour of the pointer 10 is reached. As a result, the value "1" is stored in the memory selected in step 105. The step motor 7 is controlled again and runs in the opposite direction until it reaches the zero position (step 109). The special pulse train is then regenerated again and the pointer traverses the individual display positions until it is determined in the last program step (step 110) that there is no more value to enter. The system program is then informed that the first process of code entry is complete.

The vehicle is first placed on a rolling test stand. When the push button T ₁ is pressed, the numerical value “1” is stored as the code number. This number means the automatic detection of the adaptation value by the rolling test stand. The drive rolls of the rolling test stand are accelerated to and held at a specific speed displayed on the rolling test stand, for example 60 Km / hour. This speed is displayed on a speedometer connected to the rolling test stand. Push button T ₁ (code “1”) stays pressed so step 10
Normal processing of the input measured value in 1 is not performed, nor is normal control of the display means and storage means of the operation recorder, and from the code number, first in step 103, one of the processes or phases a) to c). First, it is decided whether to do. As shown at step 120, at step 105, code number "1" (v and s on the rolling test stand)
Automatic detection of the adapted value for) is stored. When the rollers of the rolling test stand reach a constant speed of 60 km / h, the operator presses the pushbutton T ₃ .
As a result, the detection program 122 is started, as shown in step 121. This detection program will be described very roughly. This program is especially needed because the display and recording means of the trip recorder remain dormant when detecting the adaptation value. The processor 1 of the operation recorder, under the control of the system memory 3, counts how many pulses are input within a specific time period at a constant speed of 60 km / hour. This count value is also correlated with the device constant so that the processor can find and store the adaptation value. A similar process is performed in the distance adaptation. At the rolling test stand, after actuation of pushbutton T ₃ , the drive roll is driven over a specified total distance and then stopped, as shown at step 121. In this case, too, the processor counts the pulses generated by the generator G ₁ during the running period of this distance, compares them with a constant and calculates and stores the adaptation factor. In this way, the individual detection of the distance value and the speed value is necessary especially when the distance value and the speed value are to be displayed and recorded by separate display means and recording means by the measurement value processing. After completion of this process or steps, pushbutton T ₁ is released. This is because, for example, a new code number must first be given before the detection of the rotational speed value, which is done directly by pressing the pushbutton T ₁ .

The same applies when the test section is activated as shown in step 123 for detecting the adapted value. In this case, however, instead of the code number 1 shown in step 107 of FIG. 2B, the code number 2 must be input and stored (step 112) as shown in step 111. There, the vehicle is driven over a test section and, when the departure mark is reached, a closing signal is generated via pushbutton T ₃ , where the process of step 123 is executed and the input pulse is formed again. This detection process is terminated by a new actuation of pushbutton T ₃ when the end mark of the test section is crossed, and the input pulse number is compared with a constant, whereby the adaptation value is calculated in processor 1 of the trip recorder. It is stored in the processor. Instead of actuating the pushbutton T ₃ in order to determine the adaptation value by the test section, it is also possible to use the optical arrays provided at the end and start points of the test section.

Method step 124 is used to detect an adaptation value for engine speed. This method step 124
In order to activate, the push button T ₁ must _first be released and pressed again and then the code number 3 according to FIG. 2B must be entered via the push button T ₂ at position “30 km / h”. A mark is provided on a portion that rotates in accordance with the engine speed of the vehicle. A stroboscope is used to determine when a specific preset speed is reached. Then, in the detection process, the pushbutton T ₂ is pressed again while keeping the engine speed constant. As a result, the pulses input from the motor rotation speed generator G ₂ are counted. Immediately after a certain detection time has elapsed, the process is complete and compares the number of pulses input so far, which represents the engine speed, with a constant. From the result, a conversion coefficient is calculated, and this conversion coefficient is stored in the processor 1 as an adapted value. Obviously, this step 124 is executed only when the operation recorder is a device that also displays and records the engine speed.

In order to visualize the stored adaptation value, code number 5 or 7 must be entered after actuation of pushbutton T ₁ , depending on whether the speed adaptation coefficient or the speed coefficient is to be displayed. This has already been explained. After the push button T ₁ is actuated, the stepper motor advances the pointer stepwise at the positions "10 km / h", "20 K
Set the position to "50Km / hour" or "70Km / hour" from "m / hour" etc.従Gai have shown in Figure 2B, press the Putsushiyubotan T ₂ at each desired place. Then, the pointer is prevented from moving further, and the corresponding numerical value is stored as the code number. Push button T ₁ Keep pressing "Code 1", check at Step 103 whether either Code No. 5 or Code No. 7 is set, follow step b), and repeat Step 130. Starts a method or process for supplying a special pulse train to a step motor. At each stop position of the pointer, the actual position of the pointer is compared with the value stored in the first memory location of the memory storing the adapted value for speed or speed (13
1). If the comparison results are not equal, the step motor runs further, and if they are equal, at step 132 the step motor is stopped for a slightly longer period of time and the operator may read the corresponding value and write it down. it can. Then, the step motor is switched to run in the opposite direction toward the starting position (133). Unless the last digit (134) of the adaptation coefficient is reached, the special pulse train (130) is generated again at the zero position (135), and the pointer is moved again from the zero position by the step motor to the individual display positions. Set.
This process is carried out until the second position is correctly displayed compared to the value for the adaptation factor stored in memory, at which time the stepper motor is stopped (132) and returned. Or it is reset (133). In this way, all the numerical values of the displayed values are displayed successively. Once all the numbers have been verified sequentially, step 134
Will give a response to the system program that the display process is complete. In that case pushbutton T ₁ must be released again.

The process of entering these values is done in a manner similar to that already described for code numbers and also shown in FIG. 2B. First, the code number for one input process must be entered, ie 4 or 6. Then, in step 103, it is determined whether the input process is the input process c). Then in step 105,
Select the corresponding recording location. Next, the pointer is swung through different designated positions with the special pulse train, and the push button T ₂ is pressed at each desired position. At this position, the value given by the pointer is stored in the memory location selected in step 105 (10
8,112). Then return the pointer to the zero position and set the final value (11
Adjustment of the pointer and the setting process are repeated unless 0) is input, and thus all the numerical values representing the adapted values are sequentially input. After the last number is entered in step 110, the completion of the entry process is reported to the system program shown in step 100. It goes without saying that the pushbutton T ₁ must be released before the trip recorder can carry out its normal measurement processing again. Only then can the normal measurement value processing be performed again at step 101.

Advantageous Effects of Invention According to the device configuration of the present invention, it is additionally used as a diagnostic (diagnosis) device for calculating and instructing an adaptation coefficient used for calibration or adaptation unique to each vehicle of the travel recorder. In order to obtain the effect that the analog indicator and the digital measuring device controlled by the microprocessor can be arranged and configured, the hardware of the device can be adapted to adapt the operation recorder to various generators. It is also possible to input and output the adaptation coefficient using conventional display and recording means without increasing the cost required, that is, by slightly increasing the storage capacity of the pair of push button switches and the program memory. .

[Brief description of drawings]

FIG. 1 is a connection configuration diagram showing circuit calibration of a running recorder according to the present invention together with a recording mechanism, and FIGS. 2A and 2B are flow charts for explaining the operation of the running recorder according to the present invention. is there. 1 ... Microprocessor, 2 ... Clock generator, 3
...... System memory, 4 ... Input port, 5 ... Output port, 6 ... Drive stage, 7 ... Step motor, 8 ... Output shaft, 9 ... Transmission mechanism, 10 ... Instructing means, 11 ... gear,
12 …… Rack, 13 …… Recording pen, 14 …… Scale plate, 15, 16
…… Axis, 100 …… System program, T …… Push button switch, G …… Generator.

Claims (1)

[Claims] 1. At least one indicating element or pointer driven by a step motor for indicating a speed on the speed scale graduation body, and a memory used for forming the measured value and controlling the step motor. And a microprocessor and a device for indicating and inputting a value used for calibration or adaptation of the travel recorder using the measurement and indicating means of the travel recorder. , The above-mentioned indication of the value used for calibration or adaptation is independent of the indication depending on the measured value.In the running recorder, a special pulse generator for generating a predetermined special pulse is provided. The displacement of the movement of the recording means or the indicating means is caused by the predetermined special pulse of the movement of the recording means or the indicating means. At the time of inputting the value, it is interrupted at the predetermined position where the corresponding input should be made, and at the time of outputting the value, it is automatically interrupted at the predetermined position corresponding to the corresponding output. Is provided with a trigger key that triggers the control of the step motor by the above-mentioned predetermined special pulse train, and the reset operation of the speedometer pointer and the zero position and the full scale position are performed via the trigger key. The speed scale graduation body is configured to perform the displacement of 10 digits or 10 digit positions (10,20,30… km / h), and the corresponding number (1,2,3 ...) or a code number is assigned to the number or code number, and the input, output and the number necessary for the operation process execution processing of the following a), b) and / or c) / Or address for automatic detection (calculation) -number Character information or address-code number code (1,2,3 ...) is assigned in a predetermined correspondence relationship, that is, a) Automatic detection or calculation of conversion coefficient for speed, distance and rotation value (adaptation coefficient). B) output operation process with respect to the already stored adaptation value for the relevant distance and rotation value c) input operation process with respect to each of the above values, which is necessary for operation process execution processing. The corresponding numbers or code numbers are assigned as numbers and code information, and the relevant address-identification numbers (1,2,3) or address-code numbers are input operation steps in the memory provided in the microprocessor. It is used as an address for controlling the output operation process, and further reaches the relevant number and code information (position) to be instructed. At this time, the control of the step motor is interrupted by the microprocessor, the step motor is reset to the zero position, and the step motor is newly controlled to start the numerical value and code information of the value to be instructed next. It is a running recorder that is characterized by.