JP3169620B2 - Printer rotation cycle adjustment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Contents] Overview Industrial application field Conventional technology (FIGS. 17 and 18) Problems to be solved by the Invention Means for Solving the Problems (FIGS. 1 and 2) Action Embodiment (1) First (3) Description of the third embodiment (FIGS. 13 to 16) (2) Description of the second embodiment (FIGS. 10 to 12) (3) Description of the third embodiment (FIGS. 13 to 16)

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation period adjusting device and a rotation period adjusting method, and more particularly, to an apparatus for setting a rotation period (number) of a rotating device used in a thermal printer or the like. It is about the method.

In recent years, in a thermal printer that performs thermal printing, a rotating device that supplies thermal paper at a constant speed has a DC power supply.
Motor is used.

According to this method, the setting (observation) of the rotation period of the DC motor is performed by a setting (observing) person who checks a rotation speed detection signal and a set reference signal on an oscilloscope while checking a rotation speed variable resistor of a drive control circuit of the printer. It is done by adjusting.

[0005] However, the motor rotation speed fluctuates individually due to variations in the motor drive control circuit itself, variations in the motor itself, and variations in the mechanism on which the motor is mounted.
For this reason, it is necessary to individually perform the processing of setting the motor rotation cycle in a state where they are made to correspond one-to-one.

Therefore, there is a demand for a device that can set the rotation cycle with a simple circuit and that can set the rotation cycle with high accuracy based on the rotation number detection signal.

[0007]

2. Description of the Related Art FIGS. 17 and 18 are explanatory views according to a conventional example, and FIG. 17 is a configuration diagram at the time of adjusting the rotation cycle of a DC motor according to the conventional example.

In FIG. 17, the rotational speed of a rotary device used for supplying thermal paper in the thermal printer 1, for example, the setting of the rotational speed of the DC motor 5 is varied while observing the oscilloscope 2 connected to the test connector 7. Resistor R
This is done by adjusting c.

That is, the motor drive control circuit of the thermal printer 1 includes a test connector 7 and a level converter 6 connected to an MPU (microprocessor) 4,
A switching element Tr is connected to U4 via a base current limiting resistor Rb. The DC motor 5 has a current limiting resistor Ra, a rotational speed variable resistor Rc, and a switching element T between a motor drive power source V and a ground line (0 V).
r. Further, a code wheel 9 is attached to the motor shaft of the DC motor 5,
Is detected via the optical sensor 8, the rotation speed detection signal (hereinafter also referred to as a speed detection signal) Tc is level-converted by the level conversion unit 6 and output to the MPU 4.

Thus, the setting of the number of rotations of the motor 5 can be performed by adjusting the variable number of rotations resistor Rc.

FIG. 18 is a waveform chart at the time of adjusting the rotation cycle according to the conventional example. In FIG. 18, the method of setting the rotation speed of the DC motor 5 is as follows. First, when the switching signal TM is input to the switching element Tr, the motor terminal voltage VM rises to a specified value and depends on the rotation speed variable resistor Rc. The rotation number detection signal Tc of the rotation period T1 is supplied by the DC motor 5. When the code wheel 9 attached to the motor shaft rotates, the rotation speed of the motor 5 is detected via the optical sensor 8, and the rotation speed detection signal Tc
Is output from the level converter 6 to the MPU 4 and the oscilloscope.

On the other hand, a signal generator 3 connected to the oscilloscope 2 supplies the oscilloscope 2 with a setting reference signal SR which is a rated rotation speed (design specification rotation speed) of the DC motor 5. At this time, the setting (observing) person is the oscilloscope 2
The rotational speed variable resistor Rc of the motor drive control circuit of the thermal printer 1 is adjusted so that the waveform of the rotational speed detection signal Tc and the waveform of the setting reference signal SR displayed on the printer coincide with each other.
As a result, when the periods T1 and TR of the two signals Tc and SR coincide with each other, the person who sets (observes) the rotational speed variable resistor Rc
Is stopped, and the resistor Rc is electrically fixed.
Thus, the rotation speed of the DC motor 5 can be set.

[0013]

According to the prior art, the setting process of the rotation cycle of the DC motor 5 is set (observed).
This is performed by adjusting the rotational speed variable resistor Rc of the drive control circuit of the thermal printer 1 while comparing the rotational speed detection signal Tc with the setting reference signal SR on the oscilloscope 2.

In general, the motor speed depends on the variation of the motor drive control circuit itself, the variation of the motor itself, and the motor speed.
Fluctuates individually due to the variation of the mechanism on which the is mounted. This causes the following problem.

At the time when the mechanism on which the motor 5 is mounted and the motor drive control circuit are combined, the processing for setting the motor rotation cycle must be performed individually in a state where they are made to correspond one-to-one. This allows setting (observation)
In the comparison between the rotational speed detection signal Tc and the setting reference signal SR in the oscilloscope 2 of the user, a variation occurs in the coincidence determination. This may cause a variation in the motor rotation cycle setting process.

The oscilloscope 2 is expensive and complicated to handle. Furthermore, there is a problem that the operability is lacking, which hinders speeding up of the process of setting the motor rotation period.

The present invention has been made in view of the above-mentioned problems of the prior art, and sets a rotation period without depending on a comparison matching process using an oscilloscope between a rotation speed detection signal of a rotating device and a setting reference signal. It is an object of the present invention to provide a rotation cycle adjusting apparatus which is configured by a simple circuit and can set the rotation cycle manually or automatically with high accuracy based on the rotation number detection signal.

[0018]

According to the present invention, there is provided a method for adjusting a rotation cycle of a printer, comprising: means for detecting a rotation speed of an object to be rotated and generating a rotation cycle detection signal; A rotation cycle adjusting circuit for determining the rotation cycle of the rotating object, a rotation cycle adjusting device is attached to the printer when adjusting the rotation cycle of the object to be rotated, and the rotation cycle detection signal and the lower limit reference rotation are set in the rotation cycle adjusting device. The cycle and the upper limit reference rotation cycle are compared, a rotation cycle adjustment signal corresponding to the result is generated and output to the printer, and the output of the printer cycle variable circuit is output inside the printer according to the rotation cycle adjustment signal. And controlling the rotation cycle of the object to be rotated.

[0019]

[0020]

[0021]

[0022]

1 (a) and 1 (b) are block diagrams each showing an example of a rotation period adjusting device, and FIG. 2 is a principle diagram of a rotation period adjustment method according to the present invention. As shown in FIG. 1A, for example, the rotation cycle adjusting device includes a signal acquisition unit 1.
1, a comparison unit 12, a display unit 13, and a power supply unit 15.

For example, when the rotation period detection signal S1 of the rotation target 16 is input to the signal acquisition unit 11, the signal acquisition unit 11 outputs the comparison period signal S2 to the comparison unit 12. In the comparing means 12, the compared period signal S
2 is compared with the setting reference signal S3, and a comparison result signal S4 based on the result is output to the display unit 13. Thus, the rotation cycle comparison result is displayed on the display unit 13 based on the comparison result signal S4.

For this reason, a setting (observing) person who sets the rotation cycle of the rotation-adjusted object 16 is based on the rotation cycle comparison result displayed on the display means 13 without using the oscilloscope 2 as in the conventional example. It is possible to manually adjust the rotation cycle of the rotation adjustment target 16 via the adjustment means RC.

Thus, the device is connected to the oscilloscope 2
, It is possible to configure the circuit with a simpler circuit, to facilitate its handling, and to reduce its cost.

The power supply unit 15 for driving the signal acquisition means 11, the comparison means 12, and the display means 13 comprises a commercial frequency power supply or a storage battery.

In particular, by using a storage battery, it is possible to improve versatility as a portable rotation cycle adjusting device.

In the apparatus shown in FIG. 1B, signal output means 14 is provided.

For example, a rotation period adjustment signal S5 based on the comparison result signal S4 is output from the signal output means 14 to the rotation adjustment target 16.

In the apparatus shown in FIG. 1B, the person who sets (observes) the object to be rotated 16 based on the rotation cycle comparison result displayed on the display means 13 like the apparatus shown in FIG.
It is possible to automatically adjust the rotation cycle of the rotation target 16 without manually adjusting the rotation cycle of the rotation target 16 via the adjustment means RC.

This makes it possible to set the motor rotation cycle with good reproducibility, high accuracy, and high speed.

In the method of adjusting the rotation period of a printer according to the present invention, as shown in the flowchart of FIG. 2, first, in step P1, a rotation period obtaining process for obtaining the rotation period of the rotation-adjustment target (motor) 16 is executed. In step P2, a comparison process is performed to compare the rotation cycle of the rotation-adjusted object 16 with the lower-limit reference rotation cycle and the upper-limit reference rotation cycle. In Steps P3 and P4, the rotation cycle comparison result is displayed and the rotation cycle is manually adjusted. In the present invention, however, the process proceeds from Step P2 to Step P5, and the rotation of the rotation adjustment target 16 is performed based on the comparison processing. Automatically adjust the cycle.

That is, in the rotation period adjusting method of the present invention, the lower limit reference rotation period and the upper limit reference rotation period are set in advance. Then, the rotation adjustment target 16
And generates a rotation period detection signal S1.
The rotation period detection signal S1 is compared with the lower reference rotation period and the upper reference rotation period, and a rotation period adjustment signal is generated from the comparison result. The cycle variable circuit is controlled by the rotation cycle adjustment signal, and the cycle variable circuit is controlled so that the rotation cycle of the rotation-adjusted object is between the lower-limit reference rotation cycle and the upper-limit reference rotation cycle. As described above, in the present invention, since the cycle variable circuit is controlled by the rotation cycle adjustment signal generated by the comparison processing, the rotation cycle of the object to be rotated is automatically adjusted to the lower reference rotation cycle and the upper reference rotation cycle. Can be adjusted in between.

This eliminates the dependence on the experience of the observer who compares the rotation number detection signal and the set reference signal with the oscilloscope to determine the coincidence as in the conventional example.

[0035]

[0036]

Next, an embodiment of the present invention will be described with reference to the drawings. 3 to 16 are diagrams illustrating a rotation cycle adjusting device and a rotation cycle adjusting method according to an embodiment of the present invention.

(1) Description of First Embodiment (Reference Example 1) FIG. 3 is a diagram showing a configuration of a rotation cycle adjusting device according to a first embodiment of the present invention, and FIGS. The configuration diagrams are shown respectively.

In FIG. 3, for example, a rotation cycle adjusting device for setting the number of rotations of a DC motor, which is an example of a rotation adjustment target 16 attached to a thermal printer, includes a sampling circuit 21, a comparison circuit 22, a display circuit 23, It comprises a storage battery 25.

That is, the sampling circuit 21 is an embodiment of the signal acquisition means 11, and includes an input buffer 21A, a period conversion unit 21B, a dummy count unit 21C, a dummy count selection unit 21D, a period measurement command unit 21E, a measurement inhibition switch ( 21F and first two-input AND
(Logical product) It is composed of a logical circuit 21G. Sampling circuit 2
1 is a speed detection signal T which is an example of the rotation period detection signal S1.
c to input a sampling period signal a12 which is an example of the compared period signal S2. The internal configuration and each function of the sampling circuit 21 will be described in detail with reference to FIG.

The comparison circuit 22 is an embodiment of the comparison means 12, and includes a specification lower limit value comparison section 22A, a specification upper limit value comparison section 22B,
It comprises a second two-input AND circuit 22C and a standard period counter 22D. The comparison circuit 22 includes a sampling period signal a12 and a first reference period signal a14, which is an example of the reference period signal S3.
A comparison result signal S4 based on the second reference period signal a18
Output a lower limit value abnormality detection signal a15, an upper limit value abnormality detection signal a19, and an in-standard cycle count signal a25 to a27. The internal configuration and each function of the comparison circuit 22 will be described in detail with reference to FIGS.

The display circuit 23 is an embodiment of the display means 13 and comprises a lower limit abnormal display section 23A, an upper limit abnormal display section 23B, and a standard cycle number display section 23C. Based on the lower limit value abnormal display signal a15, the upper limit value abnormal display signal a19, and the in-standard cycle count signals a25 to a27, the display circuit 23 provides the lower limit value, the upper limit value, and the in-standard cycle value (an example of the rotation cycle comparison result). (Design specification cycle value). The internal configuration and each function of the display circuit 23 are described in the comparison circuit 2.
5 together with FIG.

The storage battery 25 is an embodiment of the power supply unit 15 and drives the sampling circuit 21, the comparison circuit 22, and the display circuit 23. In the embodiment of the present invention, a commercial frequency power supply (AC 100, 200 [V] / 50, 60 [HZ])
Or it is composed of a storage battery (a battery of about 5 [V] or the like).

The input terminal 26A is an external terminal for receiving the speed detection signal Tc, and is connected to the printer-side test terminal 27A.

FIG. 4 is a configuration diagram (part 1) of each part of the rotation cycle adjusting device according to the first embodiment of the present invention.

In FIG. 4, a sampling circuit 21 includes an input buffer 21A, a period conversion unit 21B, and a dummy count unit 21.
C, a dummy count selection section 21D, a cycle measurement command section 21E,
Measurement inhibit switch 21F and first two-input AND circuit 21G
Consists of

That is, the input buffer 21A is an amplifier (buffer), and in the embodiment of the present invention, comprises an inverter circuit. The function of the input buffer 21A is that the speed detection signal a1 =
Inverts and amplifies Tc and converts the inversion speed detection signal a2 into a period converter.
21B. The period conversion unit 21B is JKFF
(JK-type flip-flop) A circuit which converts the period of the inversion speed detection signal a2 and outputs the count clock signal a3 to the dummy count selection unit 21D and the first two-input AND circuit 21G. .

The dummy count section 21C comprises a first frequency divider F2 and a first delay circuit F3. The first to fourth frequency-divided signals a4 to a7 are based on the count clock signal a3.
And the first to n-th delayed signals a
8 to a10 are output to the dummy count selector 21D. The dummy count selection unit 21D includes a plurality of switching elements SW1 to SWn, and includes first to n-th delay signals a8 to SWn.
a10 to select one selected delayed signal, eg, a
10 is output as a set signal S to the cycle measurement command section 21E.

Further, the cycle measurement command section 21E is constituted by a latch circuit comprising first and second NAND circuits NAND1 and NAND2, and outputs a latch signal a11 based on a reset signal R to a first two-input AND circuit 21G. Is output to The measurement prohibition switch 21F outputs a reset signal R to the cycle measurement command section 21E. When the switch 21F is turned “ON”, the potential 0 V of the ground line is changed to the cycle measurement command section 21E.
Is input to Thereby, the rotation cycle adjustment processing is reset.

Therefore, in the first two-input AND circuit 21G, the count clock signal a3 and the latch signal a11 are subjected to AND operation, and the sample period signal a12 is output to the comparison circuit 22.

FIG. 5 shows a configuration diagram (part 2) of each part of the rotation cycle adjusting device according to the first embodiment of the present invention.

In FIG. 5, the standard lower limit comparator 22A comprises an inverter IN1, a trigger signal generator G1, a lower limit setting circuit G2, and a third NAND circuit NAND3.

That is, the inverter IN1 inverts and amplifies the sample period signal a12 and outputs the inverted sample period signal to the trigger signal generation circuit G1 and the third NAND circuit NAND3. The trigger signal generation circuit G1 includes buffer circuits B1 and B2 and analog elements R and C, and processes the inverted sample period signal to output a first trigger signal a13 to the lower limit value setting circuit G2. The lower limit value setting circuit G2 includes a one-shot timer circuit and an analog element R
1 and C1, and outputs the first reference periodic signal a14 to the third NAND circuit NAND3. At this time, the cycle T1 of the reference cycle signal a14 is, for example, 1.1 × R1 × C1
It is. The third NAND circuit NAND3 performs a NAND operation of the inverted sample period signal and the first reference period signal a14, and outputs the lower limit abnormality detection signal a15 to the second AND circuit 22.
Output to C.

The lower limit abnormality display section 23A comprises a lower limit abnormality display setting circuit G3, an inverter IN2, and a lower limit abnormality display circuit G4.

For example, the lower limit abnormality display setting circuit G3 and the inverter IN2 process the lower limit abnormality detection signal a15 and output the lower limit abnormality display signal a16 to the lower limit abnormality display circuit G4. The lower limit value abnormality display circuit G4 includes a resistance element R and a light emitting diode element D, and displays a rotation speed abnormality (lower limit value) based on the lower limit value abnormality display signal a16.

FIG. 6 is a configuration diagram (part 3) of each part of the rotation cycle adjusting device according to the first embodiment of the present invention.

In FIG. 6, the standard upper limit comparator 22B comprises an inverter IN3, a trigger signal generator G5, an upper limit setting circuit G6, and a first NOR circuit OR1.

That is, the inverter IN3 inverts and amplifies the sample period signal a12 and outputs the inverted sample period signal to the trigger signal generation circuit G5 and the first NOR circuit OR1. The trigger signal generation circuit G5 includes buffer circuits B3 and B4 and analog elements R and C, and processes the inverted sample period signal to output a second trigger signal a17 to the upper limit value setting circuit G6. The upper limit value setting circuit G6 includes a one-shot timer circuit and an analog element R
2, C2 and outputs the second reference period signal a18 to the first NOR circuit OR1. At this time, the cycle T2 of the reference cycle signal a18 is, for example, 1.1 × R2 × C2. The first NOR circuit OR1 performs a NOR operation on the inverted sample period signal and the second reference period signal a18 and outputs an upper limit abnormality detection signal a19 to the second AND circuit 22C. is there.

The upper limit abnormality display section 23B comprises an upper limit abnormality display setting circuit G7, an inverter IN4, and an upper limit abnormality display circuit G8.

For example, the upper limit abnormality display setting circuit G7 and the inverter IN4 process the upper limit abnormality detection signal a19 and output the upper limit abnormality display signal a20 to the upper limit abnormality display circuit G8. The upper limit value abnormality display circuit G8 includes a resistance element R and a light emitting diode element D, and displays a rotational speed abnormality (upper limit value) based on the upper limit value abnormality display signal a20.

The second AND circuit 22C performs a logical AND operation of the lower limit abnormality detection signal a15 and the upper limit abnormality detection signal a19 and outputs a period abnormality instruction signal ST to the second frequency divider F4. Is what you do.

The in-standard period counting section 22D includes a second frequency divider F4 and a second delay circuit F5. The second frequency divider F4 divides the sample period signal a12 by using the period abnormality command signal ST as a clear signal, and converts the first to n-th standard frequency-divided signals a21 to a24 into a second delay circuit F5. Is output to The second delay circuit F5 delays the first to n-th standard frequency-divided signals a21 to a24 and outputs the first to n-th standard display signals a25 to a27 to the standard cycle number display circuit 23C. Is what you do.

For example, the in-standard cycle number display section 23C includes a resistance element R and light-emitting diode elements OK1 to OKn.
To display the standard rotation speed based on the n-th standard display signals a25 to a27.

Thus, the rotation period adjusting device according to the first embodiment is configured. Next, the operation of the device will be described.

FIG. 7 is an operation time chart (part 1) of the rotation cycle adjusting device according to the first embodiment of the present invention.
4 shows an operation time chart of the sampling circuit 21.

For example, D used in a thermal printer
When setting the number of revolutions of the C motor 5 (refer to FIG. 17), first, the input terminal 26A of the apparatus is connected to the printer-side test terminal 27A of the thermal printer.

As a result, in FIG. 7, the speed detection signal a1 = Tc supplied to the input terminal 26A of the device is inverted and amplified by the input buffer 21A, and the inverted speed detection signal a2 is output to the period converter 21B. . The count clock signal a3 obtained by period-converting the inversion speed detection signal a2 by the period conversion unit 21B is output to the dummy count selection unit 21D.
And the first two-input AND circuit 21G.

Further, the first to fourth frequency-divided signals a1 to a4 are generated by the dummy count section 21C based on the count clock signal a3, and are delayed. Also,
The first to n-th delay signals a8 to a10 are output to the dummy count selector 21D. In the dummy count selection section 21D,
One delay signal a10 is selected by the plurality of switching elements SW1 to SWn, and the delay signal a10 is output to the cycle measurement command section 21E as the set signal S.

Next, based on the reset signal R, the latch signal a11 is output from the cycle measurement command section 21E to the first two-input AND circuit 21G. At this time, the measurement inhibit switch 21
When F is “ON”, the potential 0 [V] of the ground line is input to the cycle measurement command section 21E. Thereby, the rotation cycle adjustment processing is reset.

Therefore, in the first two-input AND circuit 21 G, the count clock signal a 3 and the latch signal a 11 are subjected to an AND operation, and the sample period signal a 12 is output to the comparison circuit 22.

FIG. 8 is an operation time chart (part 2) of the rotation cycle adjusting device according to the first embodiment of the present invention.
5 shows an operation time chart of the standard lower limit comparing section 22A and the standard upper limit comparing section 22B.

In FIG. 8, the standard lower limit comparing section 22A detects / displays the rotation state when the sample period signal a12 is lower than the standard lower limit.

That is, the sample period signal a12 is inverted and amplified by the inverter IN1, and the inverted sample period signal is supplied to the trigger signal generation circuit G1 and the third NAND circuit N
Output to AND3. In the trigger signal generation circuit G1, a first trigger signal a13 obtained by subjecting the inverted sample period signal to signal processing by the buffer circuits B1 and B2 and the analog elements R and C is output to the lower limit value setting circuit G2. In the lower limit value setting circuit G2, the first reference period signal a14 set by the one-shot timer circuit and the analog elements R1 and C1 is output to the third NAND circuit NAND3.

As a result, the third NAND circuit NAND3
Now, the inverted sample period signal and the first reference period signal a14
Is calculated, and the resulting lower limit abnormality detection signal a15 is output to the second AND circuit 22C.

In the lower limit abnormality display section 23A, a lower limit abnormality display signal G16 obtained by processing the lower limit abnormality detection signal a15 by the inverter IN2 is output to the lower limit abnormality display circuit G4. . Further, in the lower limit abnormality display circuit G4, the resistance element R and the light emitting diode element D perform a rotation speed display (lower limit value) process based on the lower limit abnormality display signal a16. At this time, the observer manually adjusts the rotational speed variable resistor Rc of the thermal printer while observing the rotational speed display (lower limit value).

As a result, the rotation cycle of the motor 5, which is lower than the design reference value, can be adjusted to the design reference cycle value.

Further, the standard upper limit value comparing section 22B detects / displays the rotation state when the sample period signal a12 is higher than the standard upper limit value.

That is, an inverted sample period signal obtained by inverting and amplifying the sample period signal a12 by the inverter IN3 is output to the trigger signal generation circuit G5 and the first NOR circuit OR1. In the trigger signal generation circuit G5, the buffer circuit B3, B4 and the analog elements R, C process the inverted sample period signal, and output the second trigger signal a17 to the upper limit value setting circuit G6. At this time, in the upper limit value setting circuit G6, based on the second trigger signal a17, the one-shot timer circuit and the second reference period signal a18 generated by the analog elements R2 and C2 are sent to the first NOR circuit OR1. Is output. In the first NOR circuit OR1, the NOR operation of the inverted sample period signal and the second reference period signal a18 is processed, and the resulting upper limit abnormality detection signal a19 is sent to the second AND circuit 22C. Is output.

In the upper limit abnormality display section 23B, the upper limit abnormality display setting circuit G7 and the upper limit abnormality display signal a20 obtained by processing the upper limit abnormality detection signal a19 by the inverter IN4 are output to the upper limit abnormality display circuit G8. . As a result, in the upper limit abnormality display circuit G8, the rotation speed abnormality display (upper limit) processing is performed by the resistance element R and the light emitting diode element D based on the upper limit abnormality display signal a20. At this time, the observer manually adjusts the rotational speed variable resistor Rc of the thermal printer while observing the rotational speed display (upper limit value).

As a result, the rotation cycle of the motor 5, which is at the upper limit than the design reference value, can be adjusted to the design reference cycle value.

In the second AND circuit 22C, the logical product of the lower limit abnormality detection signal a15 and the upper limit abnormality detection signal a19 is processed, and the resulting period abnormality command signal ST is subjected to the second frequency division. Is output to the device F4.

FIG. 9 is an operation time chart (No. 2) of the rotation cycle adjusting device according to the first embodiment of the present invention.
An operation time chart of the in-standard cycle counting section 22D and the in-standard cycle number display section 23C is shown.

In FIG. 9, the in-standard period counter 22D detects / displays the rotation state when the sample period signal a12 has the in-standard period.

That is, in the in-standard cycle counting section 22D, the sampling cycle signal a12 obtained by converting the cycle abnormality command signal ST into a clear signal is subjected to frequency division processing by the second frequency divider F4, and the first to fourth frequency division results are obtained. The n-th in-standard frequency-divided signals a21 to a24 are output to the second delay circuit F5. Second delay circuit F5
The first to n-th standardized display signals a25 to a27 obtained by delaying the first to n-th standardized frequency-divided signals a21 to a24 are output to the standardized cycle number display circuit 23C. Thereby, the in-standard period number display section 23C displays the first to n-th in-standard display signals a25.
Element R and light emitting diode element O based on
Display processing of the standard rotation speed is performed by K1 to OKn.

As described above, the rotation cycle adjusting device according to the first embodiment of the present invention includes the sampling circuit 21, the comparison circuit 22, and the display circuit 23 as shown in FIG.

For this reason, the speed detection signal T of the DC motor 5
When c is input to the sampling circuit 21, the sampling circuit 21 outputs a sampling period signal a12 to the comparison circuit 22. In the comparison circuit 22, the sampling period signal a12 and the first and second reference period signals a14, a18
Are compared, and the upper limit value and lower limit value abnormality detection signals a15 and a19 based on the result are output to the display circuit 23. As a result, the rotation cycle comparison result is displayed on each of the display circuits G4 and G8 based on both the abnormality detection signals a15 and a19.

For this reason, the person who sets (observes) the rotation cycle of the DC motor 5 can use the oscilloscope 2 as in the conventional example.
Can be used to manually adjust the rotation cycle adjusting means RC of the DC motor 5 based on the rotation cycle comparison result displayed on the display circuit 23.

Thus, the device is connected to the oscilloscope 2
, It is possible to configure the circuit with a simpler circuit, to facilitate its handling, and to reduce its cost.

The sampling circuit 21 and the comparison circuit 2
The power supply unit 15 for driving the display 2 and the display circuit 23 includes a commercial frequency power supply or a storage battery 25.

In particular, by using the storage battery 25, it is possible to improve the versatility as a portable rotation cycle adjusting device.

(2) Description of Second Embodiment (Reference Example 2) FIG. 10 is a configuration diagram of a rotation cycle adjusting device according to a second embodiment of the present invention, and FIGS. 4 shows an operation flowchart.

In FIG. 10, the second embodiment differs from the first embodiment in that the rotation cycle is detected / displayed by software.

For example, the second rotation cycle adjusting device for setting the rotation speed of the DC motor mounted on the thermal printer includes an input buffer 31A and a dummy sampling number setting unit 31.
B, circuit initial setting input section 31C, cycle standard setting section (MIN,
MAX) 32A, an in-standard cycle number setting section 32B, an MPU 32C, a display section (motor cycle) 33A, a display section (pass / fail display) 33B, and an internal power supply (battery) 35.

That is, the input buffer 31A, the dummy sampling number setting unit 31B, and the circuit initial setting input unit 31C are another embodiment of the signal acquisition unit 11, and the speed detection signal (digital value) is an example of the rotation period detection signal S1. ) Tc is input and the sampling number setting data D2 and the initial setting data D6, which are examples of the compared period signal S2, are output to the MPU 32C.

The cycle standard setting section (MIN, MAX) 32A, the standard cycle number setting section 32B and the MPU 32C are other embodiments of the comparison means 12, and include the sampling number setting data D2, the initial setting data D6, and the reference cycle signal S3. The motor controller outputs motor cycle data D1 and pass / fail display data D5 as an example of the comparison result signal S4 based on the cycle standard data D3 and the standard cycle number data D4 as an example.

A display section (motor cycle) 33A and a display section (pass / fail display) 33B are another embodiment of the display means 13 for displaying a rotation cycle comparison result based on the motor cycle data D1 and the pass / fail display data D5. It is.

The internal power supply (battery) 35 is the first
Commercial power supply (AC100, 200 [V])
/ 50,60 [HZ]) or storage battery (battery of about 5 [V] etc.).

Next, the operation of the second device will be described. FIGS. 11 and 12 show an MP according to a second embodiment of the present invention.
9 shows an operation flowchart (Nos. 1 and 2) of U.

For example, D used in a thermal printer
When setting the number of revolutions of the C motor 5 (refer to FIG. 17), first, the input terminal 26A of the apparatus is connected to the printer-side test terminal 27A of the thermal printer. In the embodiment of the present invention, it is assumed that the rotation period adjustment resistor RC on the printer side is adjusted from a state where the rotation speed of the motor is high.

That is, in FIG. 11, an initialization process for the device is performed in step P1. In the initial setting process at this time, the initial setting value is read into the MPU 32C from the circuit initial setting input unit 31C via the initial setting data D6 and the like by the DIP switch "ON" of the device.

Next, in step P2, it is determined whether or not the speed detection signal Tc has been input. At this time, if the signal Tc has been input (YES), the program shifts to Step P3. If not (NO), the process returns to step P2 and waits for the input of the speed detection signal Tc. The speed detection signal Tc
Is input to the MPU 32C via the printer-side test terminal 27A, the input terminal 26A, and the input buffer 31A.

[0102] Thus, the setting process of the initial value N ₁ of the motor rotation period in step P3. For example, the initial value N ₁
= 4 is set. At this time, the sampling number setting data D2 is transmitted from the dummy sampling number setting unit 31B to M
Output to PU32C.

Thereafter, in step P4, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P5. If it is not entered continuously (N
In O), the process returns to Step P4 to detect the rising of the speed detection signal Tc.

Therefore, in step P5, a countdown process of the initial value of the rotation cycle N ₁ = 4 is performed. At this time, the initial value N ₁ -1 is processed by the MPU 32C.

Further, in step P6, the initial value of the rotation cycle
N₁= 0. At this time, the initial value N₁= 0
If yes (YES), the program shifts to Step P7. It
Is N ₁If not = 0 (NO), step P4
To detect the rising of the speed detection signal Tc.

Thereafter, in step P7, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P8. If it is not entered continuously (N
In O), the process returns to Step P7 to detect the rising of the speed detection signal Tc.

Therefore, in step P8, the sampling timer is started. At this time, the motor period data D1 is sampled by the MPU 32C.

Thereafter, in step P9, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P8. If it is not entered continuously (N
In O), the process returns to Step P9 to detect the rise of the speed detection signal Tc.

Therefore, in step P10, the sampling timer is stopped. Note that the sampling time is set in advance.

Next, display processing of the sampling value (TX) is performed in step P11. At this time, the motor cycle data D1 is output to the display unit (motor cycle) 33A, and the sampling value (TX) is displayed on a count display tube or the like.

Thereafter, in step P12, a comparison process is performed between the sampling value (TX) and the upper limit specification value (MAX). The comparison process at this time is performed by the MPU 32C, and when the upper limit specification value (MAX) ≧ the sampling value (TX) is satisfied (YE
In S), the routine goes to Step P13. If it does not satisfy the upper limit specification value (MAX) ≧ the sampling value (TX) (NO), the process returns to step P7, and the speed detection signal T
The rise of c is detected. The cycle standard data D3 such as the upper limit standard value (MAX) of the motor rotation cycle is output from the cycle standard setting unit (MIN, MAX) 32A to the MPU 32C.

Therefore, in step P13, a comparison process is performed between the sampling value (TX) and the lower limit specification value (MIN). At this time, the lower limit specification value (MIN) <the sampling value (T
If X) (YES), the program shifts to Step P14. It is the lower limit specification value (MIN) <the sampling value (T
If X) does not hold (NO), the process returns to step P7 to detect the rising of the speed detection signal Tc. In addition,
The cycle standard data D3 such as the lower limit standard value (MIN) of the motor rotation cycle is transmitted from the cycle standard setting unit (MIN, MAX) 32A to the MPU.
Output to 32C. At this time, the observer manually adjusts the rotational speed variable resistor Rc of the thermal printer while observing the rotational speed display (upper limit value).

As a result, the rotation cycle of the motor 5, which is an upper limit value than the design reference value, can be matched with the design reference cycle value.

[0113] Here, the process proceeds to operation flowchart of the MPU of FIG. 12 (2), the setting process of the initial value N ₂ of the motor rotation period in Step P14. For example, the initial value N ₂
= 5 is set. This is a state where the rotation cycle of the motor is slowed down when the rotational speed variable resistor Rc of the thermal printer is excessively adjusted or the like.

Thereafter, in step P15, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the program shifts to Step P16. If it is not entered continuously (N
In O), the process returns to step P15 to detect the rise of the speed detection signal Tc.

Therefore, in step P16, the sampling timer is started. At this time, the sampling number setting data D2 is output from the dummy sampling number setting unit 31B to the MPU 32C. Also, the motor cycle data D1
Is sampled by the MPU 32C.

Thereafter, in step P17, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the program shifts to Step P18. If it is not entered continuously (N
In O), the process returns to Step P17 to detect the rising of the speed detection signal Tc.

Accordingly, in step P18, the sampling timer is stopped. Note that the sampling time is set in advance.

Next, display processing of the sampling value (TX) is performed in step P19. At this time, the motor cycle data D1 is output to the display unit (motor cycle) 33A, and the sampling value (TX) is displayed on a count display tube or the like.

Thereafter, in step P20, a comparison process is performed between the sampling value (TX) and the upper limit specification value (MAX). At this time, the upper limit specification value (MAX) ≧ the sampling value (T
If X) (YES), the program shifts to Step P21. It is the upper limit specification value (MAX) ≧ the sampling value (T
If X) does not hold (NO), the process returns to step P7 to detect the rising of the speed detection signal Tc. In addition,
The cycle specification data D3 such as the upper limit value (MAX) of the motor rotation cycle is transmitted from the cycle specification setting unit (MIN, MAX) 32A to the MPU
Output to 32C.

Therefore, in step P21, a comparison process is performed between the sampling value (TX) and the lower limit specification value (MIN). At this time, the lower limit specification value (MIN) <the sampling value (T
If X) (YES), the program shifts to Step P22. If it does not satisfy the standard value (MIN) <the sampling value (TX) (NO), the process returns to step P7 to detect the rising of the speed detection signal Tc. The cycle standard data D3 such as the lower limit standard value (MIN) of the motor rotation cycle
Is output from the cycle standard setting unit (MIN, MAX) 32A to the MPU 32C.

In step P22, a countdown process of the initial value of the rotation period is performed. At this time, an initial value N ₂ -1 is calculated by the MPU 32C.

Further, in step P23, the initial value of the rotation cycle
N_Two= 0. At this time, the initial value N_Two= 0
If yes (YES), the program shifts to Step P24. It
Is N _TwoIf = 0 is not satisfied (NO), Step P15
To detect the rising of the speed detection signal Tc.

Therefore, in step P24, display processing for conformity with the standard is performed. At this time, the in-standard cycle number data D4 is output from the in-standard cycle number setting unit 32B to the MPU 32C, and pass / fail display data D5 based on the in-standard cycle number data D4 is output to the display unit (pass / fail display) 33B.

As described above, according to the rotation cycle adjusting apparatus according to the second embodiment of the present invention, as shown in the flowcharts of FIGS. Is compared with the lower limit and upper limit reference rotation periods obtained based on the acquisition process of the above, and then, in steps P12 to P24, the rotation period is manually adjusted based on the display process of the rotation period comparison result. You are.

Therefore, at the time when the mechanism on which the DC motor 5 is mounted and the motor drive control circuit are combined,
Even in a case where the setting process such as the motor rotation cycle must be individually performed in a state where the DC motor 5 corresponds to the one-to-one correspondence, the rotation of the DC motor 5 is determined based on the rotation cycle comparison result displayed on the display circuit 23. The number variable resistor RC can be adjusted manually. This makes it easy to adjust even if the motor rotational speed varies individually due to, for example, variations in the motor drive control circuit itself, variations in the motor itself, and variations in the mechanism on which the motor is mounted. Can be.

As a result, the rotation speed detection signal Tc and the setting reference signal SR as in the conventional example are compared with each other by the oscilloscope and do not depend on the experience of the observer who determines the coincidence.

(3) Description of Third Embodiment FIG. 13 is a configuration diagram of a rotation cycle adjusting device according to a third embodiment of the present invention. In the figure, the third embodiment differs from the first and second embodiments in a signal output circuit for outputting a period variable resistance signal TV1 to TV8 as an example of a rotation period adjustment signal S5 based on a comparison result signal S4. 24 are provided.

That is, the signal output circuit 24 is an embodiment of the signal output means 14 and comprises output buffers B5 to B12. The signal output circuit 24 outputs a cycle variable resistance signal TV1 to TV8 based on the motor cycle data D1 and the pass / fail display data D5 as an example of the comparison result signal S4 calculated by the MPU 32C to the motor drive control circuit on the printer side. . The cycle variable resistance signals TV1 to TV8 are input from the input / output terminal 26B provided on the device side to the MPU 4 provided in the motor drive control circuit via the test input / output terminal 27B provided on the printer side.

The components having the same reference numerals as those in the second embodiment have the same functions, and the description is omitted. The motor drive control circuit to which the third device is applied is, for example, a motor drive device and a printer which the present inventor previously applied for a patent (Japanese Patent Application No. 2-239351). Can be automatically adjusted.

FIGS. 14A and 14B are explanatory diagrams of a cycle variable signal according to the third embodiment of the present invention. FIG. 14A shows the relationship between the speed detection signal Tc and the cycle variable signal TVi. 4 shows a relation characteristic diagram.

In FIG. 13A, the vertical axis represents the cycle [ms] related to the speed detection signal Tc, and the horizontal axis represents the cycle variable signal TVi which is a set value for the motor drive control circuit.
According to the characteristic diagram, the speed detection signal Tc and the cycle variable signal TVi change linearly. this is,
Transistors Tr1 to Tr1 of a cycle variable circuit 2A incorporating an electronic variable resistor of a thermal printer as shown in FIG.
This is for controlling the base currents Ib1 to IBn of Trn. For example, in the case of the speed detection signal Tc in a state where the motor cycle is short (a state where the motor is rotating faster than a specified value), the transistors Tr1 to Trn of the cycle variable circuit 2A are set to “O”.
A cycle variable signal TVi having a content that increases the number of “FF” is output.

FIG. 13B shows the variable period signal TVi and the "O" of the transistors Tr1 to Trn of the variable period circuit 2A.
N "," OFF "state diagram. For example, when the cycle variable signal TV1 = 00 (hex display), all the transistors Tr1 to Trn of the cycle variable circuit 2A are in the “ON” state, and the fixed resistors R1 to Rn are electrically short-circuited. The drive voltage VM applied to the motor 5 becomes maximum.
Hereinafter, when the cycle variable signal TV2 = 01, only the transistor Tr1 of the cycle variable circuit 2A becomes “OFF”, the other transistors Tr2 to Trn become “ON”, and the fixed resistors R2 to Rn are turned off. An electrical short circuit occurs. As a result, the drive voltage VM applied to the motor 5 slightly decreases compared to the previous time, and the motor cycle slightly increases.

When the cycle variable signal TVn = FF,
All the transistors Tr1 to Trn of the cycle variable circuit 2A are in the "OFF" state, the fixed resistors R1 to Rn are in an electrically serial state, and the driving voltage V applied to the DC motor 5 is
M is minimized. As a result, the motor cycle is maximized (the state where the motor is rotating slower than the specified value).

As described above, according to the rotation cycle adjusting device according to the third embodiment of the present invention, as shown in FIG.
The signal output circuit 24 is provided in the device of the embodiment.

For example, cycle variable signals TV1 to TV8 based on the motor cycle data D1 and the pass / fail display data D5 are output to the motor drive control circuit on the printer side.

For this reason, like the first and second devices, the person who sets (observes) manually adjusts the rotation period adjustment resistor RC of the DC motor 5 based on the rotation period comparison result displayed on the display circuit 23. Without this, it is possible to automatically adjust the fixed resistors R1 to Rn of the variable periodic circuit 2A.

This makes it possible to set the motor rotation cycle with good reproducibility, high accuracy, and high speed.

Next, a method of adjusting the rotation cycle of the printer of the present invention by the third device will be described. Figures 15, 16
9 shows an operation flowchart (Nos. 1 and 2) of the MPU of the third device.

For example, when performing automatic setting processing of the number of revolutions of the DC motor 5 used in the thermal printer 1 as shown in FIG. 13, first, the input terminal 26B of the apparatus and the printer-side test terminal 27B of the thermal printer are used. And connect. In the embodiment of the present invention, it is assumed that the fixed resistors R1 to Rn of the cycle variable circuit on the printer side are automatically adjusted from the state where the rotation speed of the motor is high.

That is, in FIG. 15, an initialization process for the device is performed in step P1. In the initial setting process at this time, the initial setting value is read into the MPU 32C from the circuit initial setting input unit 31C via the initial setting data D6 and the like by the DIP switch "ON" of the device.

Next, in step P2, it is determined whether or not the speed detection signal Tc has been input. At this time, if the signal Tc has been input (YES), the program shifts to Step P3. If not (NO), the process returns to step P2 and waits for the input of the speed detection signal Tc. The speed detection signal Tc
Is input to the MPU 32C via the printer-side test terminal 27B, the input terminal 26B, and the input buffer 31A.

[0142] Thus, the setting process of the initial value N ₁ of the motor rotation period in step P3. For example, as in the second embodiment, the initial value N ₁ = 4 is set. At this time, the sampling number setting data D2 is output from the dummy sampling number setting unit 31B to the MPU 32C.

Thereafter, at step P4, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P5. If it is not entered continuously (N
In O), the process returns to Step P4 to detect the rising of the speed detection signal Tc.

Therefore, in step P5, a countdown process of the initial value of the rotation cycle N ₁ = 4 is performed. At this time, similarly to the second embodiment, the initial value N ₁ -1 is arithmetically processed by the MPU 32C.

Further, in step P6, the initial value of the rotation cycle
N₁= 0. At this time, the initial value N₁= 0
If yes (YES), the program shifts to Step P7. It
Is N ₁If not = 0 (NO), step P4
To detect the rising of the speed detection signal Tc.

Thereafter, in step P7, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P8. If it is not entered continuously (N
In O), the process returns to Step P7 to detect the rising of the speed detection signal Tc.

Accordingly, in step P8, the sampling timer is started. At this time, the motor period data D1 is sampled by the MPU 32C.

Thereafter, in step P9, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the flow shifts to Step P10. If it is not entered continuously (N
In O), the process returns to Step P9 to detect the rise of the speed detection signal Tc.

Therefore, in step P10, the sampling timer is stopped. Note that the sampling time is set in advance.

Next, display processing of the sampling value (TX) is performed in step P11. At this time, the motor cycle data D1 is output to the display unit (motor cycle) 33A, and the sampling value (TX) is displayed on a count display tube or the like.

Thereafter, in step P12, a comparison process is performed between the sampling value (TX) and the upper limit specification value (MAX). The comparison process at this time is performed by the MPU 32C, and when the upper limit specification value (MAX) ≧ the sampling value (TX) is satisfied (YE
In S), the routine goes to Step P14. When it does not satisfy the upper limit standard value (MAX) ≧ the sampling value (TX) (NO), the process shifts to Step P13 unlike the second embodiment. The cycle standard data D3 such as the upper limit standard value (MAX) of the motor rotation cycle is stored in the cycle standard setting unit (MIN, MAX).
It is output from 32A to MPU32C.

Therefore, in step P13, the cycle variable signal T
Perform Vi countdown processing. At this time, MPU32C
The cycle variable resistance signals TV1 to TV8 based on the motor cycle data D1 calculated in the above are output to the output buffer B5 of the signal output circuit 24.
To B12 via the input / output terminal 26B and the test input / output terminal 27B to the motor drive control circuit on the printer side.

As a result, the MPU of the motor drive control circuit
4 supplies the base current IBn to the cycle variable circuit 2A,
One of the transistors Tr1 to Trn of the circuit 2A is "O
N "state, one of the fixed resistors R1 to Rn is electrically short-circuited, and the drive voltage VM applied to the motor 5 is finely adjusted (increased). This makes it possible to automatically adjust the rotation cycle of the motor 5, which is the upper limit value than the design specification value, to the design reference cycle value. Thereafter, the process returns to Step P7.

If the upper limit specification value (MAX) ≧ the sampling value (TX) is satisfied (YES), the flow shifts to step P14 to compare the sampling value (TX) with the lower limit specification value (MIN). . At this time, the lower limit specification value (MIN) <
If the sampling value (TX) is reached (YES), the flow shifts to Step P16. If it does not satisfy the standard value (MIN) <sampling value (TX) (NO), the program shifts to Step P15. The cycle standard data D3 such as the lower limit standard value (MIN) of the motor rotation cycle is stored in the cycle standard setting unit (M
IN, MAX) 32A is output to MPU 32C.

Therefore, in step P15, the cycle variable signal T
Perform Vi count-up processing. At this time, MPU32C
The cycle variable resistance signals TV1 to TV8 based on the motor cycle data D1 calculated in the above are output to the output buffer B5 of the signal output circuit 24.
To B12 via the input / output terminal 26B and the test input / output terminal 27B to the motor drive control circuit on the printer side.

As a result, the MPU of the motor drive control circuit
4, the base current IBn supplied to the transistor Trn of the cycle variable circuit 2A is cut off, and any one of the transistors Tr1 to Trn of the circuit 2A is set to the "OFF" state, and the fixed resistor which is electrically short-circuited One of the devices Rn is added as an effective resistance value, and the drive voltage VM applied to the motor 5 is finely adjusted (decreased). This makes it possible to automatically adjust the rotation cycle of the motor 5 that is lower than the design reference value to the design reference cycle value. Thereafter, the process returns to step P7 to detect the rise of the speed detection signal Tc.

In step P14, the sampling value (T
X)> When lower limit specification value (MIN) (YES)
Steps of 16 MPU Operation Flowchart (Part 2)
The process proceeds to P16 and the initial value of the motor rotation period N_TwoSet processing
Make sense. For example, the initial value N _Two= 5 is set and processed
You. This is the rotational speed variable resistor Rc of the thermal printer.
If the motor is adjusted excessively, the rotation cycle of the motor slows down.
Is in a state where

Thereafter, in step P17, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the program shifts to Step P18. If it is not entered continuously (N
In O), the process returns to Step P17 to detect the rising of the speed detection signal Tc.

Therefore, in step P18, the sampling timer is started. At this time, the sampling number setting data D2 is output from the dummy sampling number setting unit 31B to the MPU 32C. Also, the motor cycle data D1
Is sampled by the MPU 32C.

Thereafter, in step P19, the speed detection signal Tc
It is determined whether or not is continuously input. At this time, if the signal Tc is continuously input (YES), the program shifts to Step P20. If it is not entered continuously (N
In O), the process returns to step P19 to detect the rise of the speed detection signal Tc.

Accordingly, in step P20, the sampling timer is stopped. Note that the sampling time is set in advance.

Next, display processing of the sampling value (TX) is performed in step P21. At this time, the motor cycle data D1 is output to the display unit (motor cycle) 33A, and the sampling value (TX) is displayed on a count display tube or the like.

Thereafter, in step P22, a comparison process is performed between the sampling value (TX) and the upper limit specification value (MAX). At this time, the sampling value (TX) ≦ the upper limit standard value (MA
If (X) is reached (YES), the program shifts to Step P23. It is the sampling value (TX) ≥ upper limit specification value (MA
If X) does not hold (NO), the process returns to step P7 to detect the rise of the speed detection signal Tc. In addition,
The cycle specification data D3 such as the upper limit value (MAX) of the motor rotation cycle is transmitted from the cycle specification setting unit (MIN, MAX) 32A to the MPU
Output to 32C.

Therefore, in step P23, a comparison process between the sampling value (TX) and the lower limit specification value (MIN) is performed. At this time, the sampling value (TX)> lower limit specification value (MI
If N) (YES), the program shifts to Step P24. If it does not satisfy the sampling value (TX)> standard value (MIN) (NO), the process returns to Step P7 to detect the rising of the speed detection signal Tc. The cycle standard data D3 such as the lower limit standard value (MIN) of the motor rotation cycle
Is output from the cycle standard setting unit (MIN, MAX) 32A to the MPU 32C.

[0165] Further, the countdown process of the initial value N ₂ of the rotation cycle at step P24. At this time, MPU32
The initial value N ₂ -1 is calculated by C.

Further, in step P25, the initial value of the rotation cycle
N_Two= 0. At this time, the initial value N_Two= 0
If yes (YES), the program shifts to Step P26. It
Is N _TwoIf not = 0 (NO), step P17
To detect the rising of the speed detection signal Tc.

Accordingly, in step P26, display processing for conformity with the standard is performed. At this time, the in-standard cycle number data D4 is output from the in-standard cycle number setting unit 32B to the MPU 32C, and pass / fail display data D5 based on the in-standard cycle number data D4 is output to the display unit (pass / fail display) 33B.

As described above, according to the rotation period adjusting apparatus according to the third embodiment of the present invention, as shown in the flowcharts of FIGS. Is compared with the reference rotation period obtained based on the acquisition process, and then, in step P13, the rotation period is automatically adjusted based on the rotation period comparison result. In step P14, comparison processing with the lower-limit reference rotation cycle is performed, and then, in step P15, the rotation cycle is automatically adjusted based on the rotation cycle comparison result.

For this reason, when the mechanism on which the DC motor 5 is mounted and the motor drive control circuit are combined,
Even in the case where the setting process of the motor rotation period and the like must be individually performed in a state where they are made to correspond one-to-one, the rotation period comparison result displayed on the display circuit 23 as in the second embodiment. The electronic variable resistor of the cycle variable circuit 2A of the DC motor 5 can be automatically adjusted based on the comparison process without manually adjusting the rotational speed variable resistor RC of the DC motor 5 based on the above.

As a result, it is possible to reduce the work load of the setter who sets the motor rotation cycle.
This allows easy and high-speed adjustment even if the motor rotation speed varies individually due to, for example, variations in the motor drive control circuit itself, variations in the motor itself, and variations in the mechanism on which the motor is mounted. It becomes possible to do.

[0171]

As described above, according to the first apparatus of the present invention, the signal acquisition means, the comparison means, and the display means are provided, and the comparison period signal to be rotated and the reference period signal are compared. Have been.

For this reason, without using an oscilloscope as in the conventional example, the setter (observer) manually adjusts the rotation cycle adjusting means to be rotated based on the rotation cycle comparison result displayed on the display means. It becomes possible. This makes it possible to configure the device in hardware with a simpler circuit than an oscilloscope, to facilitate its handling, and to reduce its cost. By using a storage battery, it is possible to improve versatility as a portable rotation cycle adjusting device.

Further, according to the second apparatus of the present invention, the comparison rotation cycle obtained based on the processing of acquiring the rotation cycle of the rotation-adjusted object and the lower limit and upper limit reference rotation cycles are compared by software. After that, the rotation cycle is manually adjusted based on the display processing of the rotation cycle comparison result.

For this reason, when the mechanism on which the object to be rotated is mounted and the drive control circuit thereof are combined, the processing for setting the motor rotation cycle and the like is individually performed in a one-to-one correspondence. Even if it is necessary to do so, it becomes possible to manually adjust the rotation cycle adjusting means to be rotated based on the rotation cycle comparison result displayed on the display means.

Further, according to the third device of the present invention, the first device is provided with a signal output means, and the rotation period adjustment signal processed in a software manner based on the comparison result signal is output to the object to be rotated. Have been.

For this reason, as in the first and second apparatuses, the person who sets (observes) manually adjusts the rotation cycle adjusting means to be rotated based on the rotation cycle comparison result displayed on the display means. And it can be automatically adjusted. This makes it possible to set the motor rotation cycle with good reproducibility, high accuracy, and high speed.

This greatly contributes to the provision of a lightweight and easy-to-handle rotation cycle adjusting device that is optimal for setting the number of rotations performed when the rotating device is incorporated.

[Brief description of the drawings]

FIG. 1 is a principle diagram of a rotation cycle adjusting device according to the present invention.

FIG. 2 is a principle diagram of a rotation cycle adjusting method according to the present invention.

FIG. 3 is a configuration diagram of a rotation cycle adjusting device according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram (part 1) of each unit of the rotation cycle adjusting device according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram (part 2) of each part of the rotation cycle adjusting device according to the first embodiment of the present invention.

FIG. 6 is a configuration diagram (part 3) of each unit of the rotation cycle adjusting device according to the first embodiment of the present invention.

FIG. 7 is an operation time chart (part 1) according to the first example of the present invention.

FIG. 8 is an operation time chart (part 2) according to the first example of the present invention.

FIG. 9 is an operation time chart (part 3) according to the first example of the present invention.

FIG. 10 is a configuration diagram of a rotation cycle adjusting device according to a second embodiment of the present invention.

FIG. 11 is an operation flowchart (part 1) of the MPU according to the second embodiment of the present invention.

FIG. 12 is an operation flowchart (part 2) of the MPU according to the second embodiment of the present invention.

FIG. 13 is a configuration diagram of a rotation cycle adjusting device according to a third embodiment of the present invention.

FIG. 14 is an explanatory diagram of a cycle variable signal according to a third example of the present invention.

FIG. 15 is an operation flowchart (part 1) of the MPU according to the third embodiment of the present invention.

FIG. 16 is an operation flowchart (part 2) of the MPU according to the third embodiment of the present invention.

FIG. 17 is a configuration diagram at the time of adjusting a rotation cycle of a DC motor according to a conventional example.

FIG. 18 is a signal waveform diagram at the time of rotation cycle adjustment according to a conventional example.

[Explanation of symbols]

11: signal acquisition means, 12: comparison means, 13: display means, 14: signal output means, 15: power supply unit, S1: rotation cycle detection signal, S2: comparison cycle signal, S3: reference cycle signal, S4: comparison Result signal, S5: rotation cycle adjustment signal.

Claims (2)

(57) [Claims] A means for detecting a number of rotations of the object to be rotated and generating a rotation cycle detection signal; and a cycle variable circuit for determining a rotation cycle of the object to be rotated. At the time of adjusting the rotation cycle of the object to be rotated, a rotation cycle adjustment device is attached to the printer, and the rotation cycle detection signal is compared with the lower reference rotation cycle and the upper reference rotation cycle in the rotation cycle adjustment apparatus, and according to the result. Generating and outputting the rotation period adjustment signal to the printer, and controlling the output of the printer period variable circuit in accordance with the rotation period adjustment signal inside the printer to adjust the rotation period of the object to be rotated. A method for adjusting the rotation cycle of a printer, characterized by the following. 2. The printer according to claim 1, wherein the cycle variable circuit includes a plurality of switch elements that are turned on and off in response to the rotation cycle adjustment signal. Method.