JPH0754270B2 - Temperature measuring instrument - Google Patents

Description

Detailed Description of the Invention [0001] BACKGROUND OF THE INVENTION This invention relates to thermometers and equipment observations,
Involved in temperature measuring instruments for maintenance, especially prior to measurement operation.
An electronic system that has the function of standing up and checking the previous temperature measurement result
Temperature measuring instrument. [0002] 2. Description of the Related Art Electronic measuring instruments of this kind have been used in many fields in recent years.
It has been adopted in the past, especially for household use, so far the mercury body
The thermometer is rapidly becoming popular due to its ease of use.
It However, it is necessary to perform a temperature measurement operation such as a mercury thermometer.
Equipped with a function to stand up and check the previous temperature measurement result
Since it has not been recorded, make a note of the previous temperature measurement value for each temperature measurement.
There was the complexity of having to keep it. In order to solve such a problem, a memory function is provided.
Be sure to keep the temperature measurement result even after the power is turned off.
An electronic device that can read and display this as needed
Type temperature measuring device was proposed (Electronic Co., Ltd.
Published by Digest December 10, 1975 "CMO
SIC Handbook "pp.287-293). [0005] DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Separate from the switch to start the temperature measurement from the storage
There is a dedicated memory switch for reading the results
Circuit configuration is complicated, and the entire device is
Becomes larger, and it can be operated by using two switches properly
Since it has to be done, the operation is complicated and it is easy to make mistakes,
It is suitable for domestic use mainly for women and women.
There is no. The object of the present invention is to solve such problems and to simplify the problems.
The temperature of the previous measurement and the temperature of this measurement can be calculated with a single operation.
To provide a temperature measuring device that can be known
It is in. [0007] [Means for Solving the Problems] To achieve the above object
In addition, the present invention is
Switch that operates in response to the
If you shake once, only the first control signal
When shaken twice, the first control signal and the second control signal
And a control signal generating section for generating the second control signal.
In response, the temperature measuring unit that measures the temperature at a constant cycle and the second control unit
Temperature data that is reset and stored in response to the control signal.
The detected temperature data of the temperature measuring unit showing the temperature higher than
A storage unit to be stored, and the storage unit stores the first control signal.
With a display unit that displays the temperature indicated by the stored temperature data
have. [0008] [Operation] The temperature data is stored in the memory unless it is reset.
It is stored and retained, and in the initial state, it was obtained from the previous measurement.
Temperature data is stored. 1 case in this state
When it is shaken only once, the control signal generation unit outputs the first control signal
Only the display section starts the display operation.
To do. Therefore, at this time, it is stored in the storage unit.
The temperature indicated by the temperature data of the previous measurement is displayed on the display.
It In addition, the case was shaken twice in the above initial state.
In this case, the first and second control signals from the control signal generator are
Is generated. The temperature measuring unit is operated by this second control signal.
Temperature data stored in the storage unit.
When the temperature is higher than the temperature
The temperature data is stored in the storage unit, and along with this, the first
The control signal indicates the temperature data stored in the storage unit.
The temperature is displayed on the display. In this way, the case was shaken only once.
In this case, the temperature indicated by the temperature data of the previous measurement is displayed on the display.
If it is displayed and the case is shaken twice in a row,
The temperature indicated by the constant temperature data is displayed on the display.
Become. [0010] Embodiments of the present invention will now be described with reference to the drawings.
It FIG. 1 shows an embodiment of a temperature measuring device according to the present invention.
FIG. 1 is a configuration diagram showing a main body case, 2 is a sensor
Reference numeral 3 is a switch, 4 is a display window, and 5 is a circuit board. In this embodiment, a thermometer will be described as an example.
However, the present invention is not limited to this. As shown in FIG.
A sensor unit 2 with a built-in thermosensitive element such as a thermistor is installed.
In addition, the temperature of the measured
A display window 4 for displaying the degree is provided. Also,
A part of the main body case 1 is opened and shown in the main body case 1.
As described above, the circuit board 5 provided with various circuits to be described later is removed.
The switch 3 is mounted on this circuit board 5.
It The switch 3 connects the part A of the main body case 1.
It is configured to operate when the main body case 1 is shaken by hand.
The principle will be described with reference to FIG. That is, the moving body 6 having a relatively large weight is
It is moved in the directions of arrows a and b by the restoring means 7 such as a tension spring.
Although it is movably supported, the returning means 7 is
Is urged in the direction of arrow b. And of this moving body 6
Switch contact pieces 8 that are normally separated from each other during the movement path₁，
8₂Is provided, and at least the switch contact piece 8 is provided.₁Has elasticity
is doing. Therefore, the main body case 1 (FIG. 1) is
By shaking the mobile body 6, centrifugal force in the direction of arrow a is applied to the moving body 6.
When added, the moving body 6 resists the urging force of the returning means 7 and the arrow
It moves in the a direction, and finally the moving body 6 moves to the switch contact piece 8₁
Hitting it to bend it, switch contact piece 8₁Switch on
Piece 8₂Contact. This is the operating state of switch 3.
Is. After that, the moving body 6 is moved by the urging force of the returning means 7.
Is pulled back in the direction of arrow b, and the switch contact piece 8₁, 8₂Are mutual
The switch 3 becomes inoperative after being released. By the way, the switch 3 will be described later.
In addition, the operating state must continue for a predetermined time or longer. For this reason
Then, the moving body 6 has a switch contact piece 8₁, 8₂After contacting
Hold the moving body 6 as it is for the predetermined time or more.
There is a need. FIG. 3A shows a specific example of such a switch 3.
9 is a cross-sectional view showing a cylinder, and 10 is a holding means.
Therefore, the parts corresponding to those in FIG. Returning to the inside of the cylinder 9 in FIG.
The moving body 6 is movably provided by being supported by the means 7.
In addition, the switch contact piece projects from the outside of the cylinder 9 to the inside.
8₁, 8₂Is provided, as described in FIG.
As the moving body 6 moves in the direction of arrow a,
The moving body 6 is a switch contact piece 8₁Hit the switch contact piece 8₁To
Switch contact piece 8₂Contact. Further, on the inner surface of the cylinder 9, is there a leaf spring or the like?
A plurality of holding means 10 are attached. this
As shown in FIG. 3 (b), the holding means 10 has a cylindrical piece shape.
And one end is bent slightly so that the protrusion 10 '
I am doing it. On the other hand, the protrusion 9 ′ is fitted on the cylinder 9.
A through hole 9'is provided so that the protrusion 1
0'is fitted and fixed with an adhesive or the like, and the holding means 10 is attached.
Attach to cylinder 9. Returning to FIG. 3 (a), one end is circular in this way.
The holding means 10 fixed to the tube 9 have their other ends close to each other.
So that the inner surface of the cylinder 9 is inclined. Move
By moving the body 6 in the direction of arrow a, first, the holding means 10 is moved.
Abut on the switch contact piece 8₁Hit
Lever and switch contact 8₂Contact and stop. This
At this time, the moving body 6 is held by the holding means 10.
It The stopped moving body 6 has a switch contact piece 8
₁(And switch contact 8₂) Repulsive force and urging of the returning means 7
After stopping, move in the direction opposite to arrow a by the action of force.
However, the holding means 10 cannot move immediately.
I can't. Switch contact piece 8₁(And switch contact
8₂), The restoring means 7 and the holding means 10 respectively have appropriate elastic coefficients.
The holding force of the holding means 10 can be set by setting it to the appropriate value.
At last, the moving body 6 is finally released from the holding state of the holding means 10.
It can be released and returned to its original position. Like this
And switch piece 8₁, 8₂Is in contact for a predetermined time
Can be kept in a state. FIG. 4 shows another specific example of the switch 3.
And in particular a separate holding means 10 as shown in FIG.
Switch contact piece 8 without₁Which is also used as a holding means
Is. That is, one switch contact piece is provided on the inner surface of the cylinder 9.
8₂Attach this switch contact piece 8₂To face
Flexible switch contact piece 8₁Is attached. Mobile unit 6
Moves in the direction of arrow a, the switch contact piece 8₁To
Switch contact piece 8₁Is bent and the switch contact piece 8₂Contact with
It This switch contact 8₁Due to the bending of the
Itchi contact piece 8₁And the inner surface of the cylinder 9. That
After a predetermined time, the moving body 6 is pulled by the returning means 7.
Returned, switch contact piece 8₁And switch contact 8₂Separate from
It Not limited to these, for example, in FIG.
The moving body 6 as a magnet and the switch 8₁, 8₂To
By using the contact piece of the reed switch,
8₁, 8₂While the mobile unit 6 is close to them,
Any deformation is possible, such as contacting
It FIG. 5 shows the parts inside the main body case 1 (FIG. 1).
FIG. 2 is a view showing an arrangement, in which a switch 3 is provided on a circuit board 5.
And the indicator 11 for displaying the temperature are attached.
Switch contact piece 8 of switch 3₁, 8₂And display 11
A terminal is a predetermined end of the circuit wiring provided on the circuit board 5.
It is connected to a child (not shown). Also, the display 11
The circuit board 5 is arranged so as to face the display window 4 shown in FIG.
The temperature displayed on the display 11 is arranged in the main body case 1.
The degree can be observed through the display window 4. The sensor section 2 has a structure as shown in FIG.
The thermosensitive element 12 such as a thermistor is provided on the
The terminal of the thermal element 12 is connected to the circuit board 5 via the lead wire 13.
It is connected to a predetermined terminal of the circuit wiring. In Figure 5 (a)
The same is true. Incidentally, FIG. 5A shows the switch 3 and the indicator.
11 and 11 are arranged in the width direction of the main body case 1,
In the same figure (b), they are arranged in the longitudinal direction of the main body case 1.
It is a thing. The circuit formed on the circuit board 5 is
For displaying the temperature detected by the sensor unit 2 on the display unit 11.
Although it is a display circuit, a specific example of such a display circuit will be described below.
Reveal FIG. 6 shows a specific example of such a display circuit.
It is a lock diagram, 14 is an oscillator, 15 and 16 are counts
, 17 is an RS type latch circuit, 18 is a control signal generator
Section, 19 is a counter, 20 is a control section, 21 is a temperature measuring section, 2
2 is a storage unit, 23 is a measurement range outside detection unit, and 24 is a display decoration.
Feeder, 25 is an RS type latch circuit, and 26 is a falling edge.
Detection units 27, 29 are NAND gates 30, 32, 33
Is an inverter, and the parts corresponding to the above drawings are the same
I have attached a code. In the figure, the oscillator 14 and the counter 1
5, 16, 19, latch circuits 17, 25, control unit 20,
Temperature measuring unit 21, display decoder 24, falling edge detection unit 2
6 indicates that the signal supplied to the reset terminal R has a high level.
Is in the reset state (hereinafter referred to as “H”),
It Switch contact piece 8 of switch 3₁, 8₂(Figure
2) is not in contact (this state will be referred to as
Switch 3 is called inactive because switch 3 is open.
8₁, 8₂Switch 3 is closed when the
Called the operating state), and one of the NAND gates 27 is turned on.
The force is “H”, and the counter 16 and the latch circuit 1
7, the reset input becomes "H" and is reset.
ing. The oscillator 14 is a CR oscillator, a crystal oscillator, or the like.
Therefore, the reference clock MCK is generated. This standard
The lock MCK is divided into a predetermined frequency by the counter 15.
Is supplied to the counters 16 and 19 and the display decoder 24.
Be done. The oscillator 14 and the counter 15 are connected to the NAND gate 2
MC obtained by inverting the output signal of 7 by the inverter 30
It is switched to the operating or non-operating state by the K / ON signal.
It The counter 16 and the latch circuit 17 have a switch function.
The judgment unit for judging that the switch 3 has been operated.
ing. In this determination unit, the counter 16 switches
This is to prevent malfunction due to chattering
Then, shake the main body case 1 (FIG. 1) as described above.
As a result, the switch 3 is activated and a predetermined period (about 0.1
If it is closed for more than 2 seconds, it overflows and its Q output
Changes from low level (hereinafter referred to as “L”) to “H”
It Further, the latch circuit 17 raises the Q output of the counter 16.
Set on the falling edge, along with which its Q_ output
(That is, the output that is the inverse of the Q output, and so on)
Is inverted from "H" to "L". Counter 16 and latch
Circuit 17 is reset when switch 3 is open.
Yes, is reset released when switch 3 is closed?
The latch operation every time the switch 3 is actuated and closed.
The Q_ output of path 17 is inverted from "H" to "L" and
Every time the switch 3 is opened, its Q_ output changes from "L".
Invert to "H". The control signal generator 18 has a Q of the latch circuit 17.
In response to the output, the EN signal which is the control signal, GRST1
Signal and the GRST2 signal. These control signals
Is "H" in the initial state, but it is a predetermined value.
The case body 1 is shaken only once within a fixed time, and the switch 3
Is closed only once, EN signal and GRST
1 signal becomes “L”, then the case body 1 only once
Unless it is shaken, it is "L" as it is. Well
In addition, the case body 1 is shaken twice in succession within this fixed time.
When switch 3 is closed twice, the first vibration
The EN signal and GRST1 signal become "L" at
The EN signal returns to "H" by shaking, and GRST
The two signals become "L". These GRST1, 2 signals are
Next, unless the case body 1 is shaken once,
It is "L". GRST1 signal generated in this way
Is supplied to the reset terminal R of the display decoder 24.
It is also supplied to the NAND gate 27. GRST1
When the signal is "H", the display decoder 24 is reset.
Yes, the display 11 is displaying a blank (that is, nothing
Not shown). Also, the GRSTl signal becomes "L".
Then, the display decoder 24 is released from reset and the display
11 displays predetermined data. GRS generated from the control signal generator 18
The T2 signal is supplied to the counter 19, the control unit 20, the temperature measuring unit 21,
Reset of the latch circuit 25 and the falling edge detection unit 26
It is supplied to the terminal R and inverted by the inverter 32.
And is supplied to the NAND gate 29. The counter 19 is a clock from the counter 15.
Divide Ku further. Q of predetermined frequency division ratio_lOutput is control unit 2
0 is supplied to control the temperature measurement timing in the temperature measurement unit 21.
It Q_lQ of output frequency division ratio_mThe output is the latch circuit 25
Supplied as a set input to. The latch circuit 25 is
After releasing the set, the Q of the counter 19_mFirst fall of output
It is set at the edge and its Q_ output is from "H" to "L".
Flip to. This Q_ output has already been released from reset
Is supplied to the falling edge detection unit 26, and its falling edge is detected.
A MAX.R signal is formed which represents the signal. This MAX
The R signal is stored in the storage unit 22 including a D flip-flop.
Set and delete the previous temperature measurement value that was held so far.
Let The Q_ output of the latch circuit 25 is a NAND gate.
Also supplied to 29. When the reset of the temperature measuring unit 21 is released,
Q of counter 9_lMeasures the temperature once for each output cycle
And this Q_lTemperature measurement completed just before the falling edge of the output
Finish. And Q_lIt is synchronized with the falling edge of the output.
The temperature measurement value obtained at the time of
Compared with the temperature value, the temperature measurement value obtained at that time (hereinafter, the current
When the temperature measurement value is large, the temperature measurement value 21 is MAX.
・ Generates φ signal and has been stored in the storage unit 22
Write the current measured value instead of the existing measured value. Therefore, memory
After the temperature measuring unit 11 is released from reset,
Of the temperature measurement values obtained up to
Becomes The temperature measurement value stored in the storage unit 22 is read.
It is taken out and supplied to the temperature measuring range outside detection unit 23. Measurement range
The outside detection unit 23 detects that the temperature measurement value read from the storage unit 12 is
When it is out of the specified measurement range, the fact is displayed on the display 15.
Fixed numerical values, symbols, patterns instead of temperature measurement values
Data representing the above is supplied to the display decoder 14. Here, the predetermined measurement range is 32.0 to
The temperature is 42.0 ° C. Reset by MAX / R signal
For the previous temperature measurement held in the storage unit 12 before
If you want to display the measured temperature value, that is, the previous measured temperature value,
When the temperature is lower than 32.0 ° C, the measuring range outside detection unit 23
Is displayed as "32.0 ° C", and when it exceeds 42.0 ° C
"42.0 ° C" is displayed at this time. In addition, MAX ・
Read from the storage unit 22 after being reset by the R signal
When the measured temperature value is less than 32.0 ° C, "LO
℃ ”exceeds 42.0 ℃," HI ℃ "
Are displayed on the display unit 15. In this way, the predetermined measurement range
Measured in order to make the displayed content different from the previous temperature measurement value outside the environment.
The out-of-range detector 23 is output from the control signal generator 18.
It is controlled by the EN signal. That is, this EN signal is
During the previous temperature measurement value display period, it is "L", and the current temperature measurement value
It is "H" during the display period. The display decoder 24, together with the display 11,
It forms the display part, and the GRST1 signal becomes "L".
When the reset is released due to the
Decode the output of section 23 and display the above on the display 11.
Although it is performed, it is further preset from the inverter 33.
By the "H" DisPR signal supplied to the terminal PR
Preset and all the segments light up on the display 11
Supply a signal that does. The operation of this embodiment will be described below.
No, the main body case 1 only once within a predetermined time.
Is shaken (hereinafter, the main body case 1 is shaken in this way)
Switch 3 is closed only once.
FIG. 7 showing the operation timing of each part for the operation in the case of
Explain. Even when not in use, the storage unit 22 stores the previous measurement data.
The temperature value N'x is held. Power supply voltage V
_DDIs applied, the display 11 is in the operating state,
The signal generator 18 is released from reset,
The applied EN signal and GRST1 signal are "H".
Therefore, the display decoder 24 is in the reset state and displays
The device 11 is displayed blank. Also, Nand Gate 2
The input of switch 7 on the switch 3 side is "H", and the other input is
Since the GRST1 signal that is also "H",
MC obtained by inverting output of inverter 27 with inverter 30
The K · ON signal is “H”, the oscillator 14 and the counter 1
5 is in a reset state. Further, it is output from the control signal generator 18.
The GRST2 signal that is also "H", the counter 19, control
Unit 20, temperature measuring unit 21, latch circuit 25 and falling edge
The detection unit 26 is also in the reset state. "H" GRST2
The signal is inverted by the inverter 32 and is then transferred to the NAND gate 29.
Q_ output of "H" of the latch circuit 25
This is also supplied to the NAND gate 29.
Di obtained by inverting the output of the inverter 29 by the inverter 33
The sPR signal is "L". In this state, the switch 3 is closed
Then, the reset is released from the counter 16 and the latch circuit 17.
Also, the input on the switch 3 side of the NAND gate 27 is
Since it is inverted from "H" to "L", the MCK ON signal is
It becomes "L" and the oscillator 14 and the counter 15 are also reset.
It will be canceled. Therefore, the oscillator 14 uses the reference clock MCK
Is generated, and the counter 15 divides the frequency. The counter 16 outputs the counter 15.
Counts the clocks, but switch 3 takes about 0.1 seconds
When closed, the counter 16 overflows,
The Q output is inverted from "L" to "H". In this reversal
Therefore, the latch circuit 17 is set and its Q_ output is
Invert from "H" to "L". This Q_ output falling edge
Control signal generator 18 responds to the
The T1 signal is inverted from "H" to "L". And G
When the RST1 signal becomes "L", the display
The reset of the da 24 is released. Therefore, the display decoder 24 includes a storage unit 2
The previous temperature measurement value N'x is read from 2 and detected outside the measurement range
It is supplied via the section 23. This previous temperature measurement value N'x is
Coded and the corresponding value "T'x
℃ ”is displayed. In this case, this previous temperature measurement value N'x
When it is out of the specified measurement range, as described above,
Numerical value fixed as "32.0 ° C" or "42.0 ° C"
Is displayed. At this time, from the control signal generator 18,
The output GRST2 signal is kept at "H".
It After that, when the switch 3 is opened, the counter
And the latch circuit 17 and the latch circuit 17 are reset again.
The Q_output of the latch circuit 17 is inverted from "L" to "H"
It However, the control signal generator 18 does not respond to this and E
The N signal and the GRST1 signal remain "L", and the GRS
The T2 signal remains "H". Therefore, Nand Gate
Even if the input on the switch 3 side of 27 becomes "H", MCK
The ON signal is "L", and the oscillator 14 and the counter 15
Keeps working. In this way, once within the above fixed time
Only when the switch 3 is closed, the counter 19 and control
The "H" GRST2 signal is supplied to the section 20, the temperature measuring section 21, etc.
Supplied, they are inactive and
What is displayed on the indicator 11 is stored in the storage unit 22.
Only the temperature indicated by the previous temperature measurement value N'x. That is, the above
By shaking the body case 1 only once within a certain time of
Display the temperature indicated by the previous temperature measurement value N'x on the display 11.
Can be made. After that, when the main body case 1 is shaken,
When the switch 3 operates, the counter 16 and latch
The path 17 and the reset are released. Also in this case MCK ・ O
Since the N signal is held at "L", the oscillator 14 and
The switch 15 is in operation. Therefore. Counter 16 is cow
The clock from the computer 15 is counted, and after about 0.1 seconds
When the overflow occurs, the latch circuit 17 is set and
Q_output is inverted from "H" to "L". Control signal
Raw part 18 responds to this, and the GRST1 signal starts from "L".
Invert to "H". Therefore, the display decoder 24 is reset.
The display 11 displays a blank. Next, the main body case 1 is continued within the above fixed time.
When shaken twice, the main body case 1
The movement of this concrete example of being shaken twice is called)
The operation timing of each part will be described with reference to FIG. In the case of swinging twice, switch 3 is pressed twice in a row.
It will be in a closed state. In the first closed state, the same as above.
When the EN signal and GRST1 signal are
It becomes “H” and the temperature indicated by the previous temperature measurement value N′x is displayed on the display 11.
The degree is displayed. The switch 3 is once opened (see above).
As described above, the control signal generator 18 does not respond to this, and the EN signal is transmitted.
No. and GRST1 signal are “H” as is, GRST2 signal
No. is “L” as it is, and the previous temperature measurement value is displayed on the display 11.
The temperature indicated by N'x continues to be displayed as is),
The body case 1 is shaken again within a fixed time and the switch 3 is closed.
When the state is reached, the counter 16 will
The latch circuit 17 is set by the bar flow.
Then, the Q_output is inverted from "H" to "L". this
The control signal generator 18 responds to the falling edge of the Q_ output.
Then, the EN signal is inverted from "L" to "H", and
The GRST2 signal is inverted from "H" to "L". GR
The ST1 signal is held in the "L" state as it is. In this way, the GRST2 signal becomes "L".
As a result, the reset of the counter 19 is released and the counter 19
Start counting the clock from the computer 15,
Control unit 20, temperature measuring unit 21, latch circuit 25 and falling edge
The reset of the edge detection unit 26 is also released. Further, the GRST2 signal changes from "H" to "L".
The inverter of the NAND gate 29 has been inverted to
The input on the 32 side becomes "H", and the other latch circuit 25 side
Since the input of is also “H” at this time, the DisPR signal is
The display decoder 24 inverts from "L" to "H", and
Is set. As a result, the display decoder 24 is out of the temperature range.
Acceptance of data from the detection unit 23 is prohibited, and the display unit 1
All 1 segments are illuminated. In this way, all segments of the display 11 are
By turning on the light, the display decoder 24 and the display 11
You can confirm that the
It The counter 19 keeps counting and the predetermined number n
Is counted and further counted, the count value becomes 2n
Then, Q_lWhen the output is inverted from "H" to "L"
To Q_mThe output is inverted from "L" to "H". This Q_mOut
At the falling edge of force, the latch circuit 25 is set,
The Q_ output is inverted from "H" to "L". This Q_ output
The falling edge is detected by the falling edge detection unit 26, and M
The AX / R signal is formed, which causes the storage unit 22 to be restored.
Set. As a result, in the storage unit 22, the previous temperature measurement value
N'x is erased and the value 0 is retained. Further, the Q_output of the latch circuit 25 is "L".
The output of the NAND gate 29 is "H".
Therefore, the DisPR signal is displayed as "L".
The preset of the decoder 24 is released. As a result, the table
The display decoder 24 has a temperature measurement read from the storage unit 22.
The value is supplied via the out-of-measurement range detector 23.
In this case, this temperature measurement value is 0 and is outside the measurement range, that is, 32.
Since the temperature is lower than 0 ° C., the measurement range out-of-range detection unit 23 displays “LO
The data representing “° C.” is supplied to the display decoder 24, and
Thus, this is displayed on the display unit 11. When the count value of the counter 9 reaches 3n,
Q_lThe output is inverted from "L" to "H", and the control unit 20
Is detected and the signal is sent to the temperature measuring unit 21. On the other hand, in the temperature measuring section 21, the counter 9 is operated as described above.
Q_lImmediately before the falling edge of the output, the first temperature measurement is completed
When receiving a signal from the control unit 20, the storage unit 22
Read the measured temperature value from the current measured value N₁Compare with. This place
In this case, since the read temperature measurement value is 0, the current temperature measurement value N₁
Is larger, therefore the temperature measuring unit 21 sends the MAX.φ signal.
Send to storage unit 22 and display current temperature value N₁Write to memory 22
Mu. As a result, the display unit 11 displays the temperature measurement value N₁Table for
Indication "T₁℃ ”will be displayed. The period when the counter 9 counts by n
The interval is set here to about 0.7 seconds, so
Q_lOutput cycle is about 1.4 seconds, Q_mThe output cycle is about 2.8.
Seconds. Therefore, the lighting period of all the segments of the display unit 11
The period is about 1.4 seconds, and the previous "LO ° C" is displayed
The time is about 0.7 seconds. On the other hand, the display period of the previous temperature measurement value N'x
Is the time between the first swing and the next swing of the body case 1.
It is determined by the distance, and during that time, the user
Since the displayed contents cannot be seen, the display unit 11 is
It is the same as when the operation is started from the lighting of the ment. Further, the counter 19 continues counting,
When the und value becomes 4n, its Q_lOutput from "H"
When it is inverted to "L" and the count value becomes 5n, the
Q_lThe output is inverted from "L" to "H". Along with this
Then, the temperature measuring unit 21 determines the current temperature measurement value N obtained immediately before that.₂
And the temperature measurement value N stored in the storage unit 22₁And compare
Current temperature value N₂When is larger than the
Temperature N₂Can be rewritten as As a result, the display 11
Is the measured temperature N₂Display value for "T₂℃ ”is displayed
It In this way, the switch 3 is activated thereafter.
If not, the counter 19 continues to count, about 1.
Q every 2n count for 4 seconds_lOutput falling edge time
The current measured value and the measured value stored in the storage unit 22 are compared.
If the current measured temperature value is greater than
It is overwritten with the current measured value. Therefore, the display 11
The maximum temperature measured so far is displayed and the temperature rises.
The displayed temperature value is updated as the temperature increases. Incidentally, Q of countain 19_mOutput is 4n count
However, the latch circuit 25 remains as it is.
The temperature measuring operation is continued while the temperature is maintained. After that, when the switch 3 is activated, the counter
The reset circuit 16 and the latch circuit 17 are released from reset. this
In this case as well, the MCK ON signal is held at "L".
The shaker 14 and the counter 15 are in operation. Therefore. Mosquito
Unta 16 counts the clock from counter 15.
Then, when the overflow occurs after about 0.1 seconds, the latch circuit 1
7 is set and its Q_ output goes from "H" to "L".
Roll over. The control signal generator 18 responds to this by sending GRST
The 1 signal is inverted from "L" to "H". Therefore, the display
The coder 24 is reset and the display 11 is blank.
To do. At the same time, is the GRST2 signal also "L"?
To "H", counter 9, control unit 10, temperature measuring unit 1
1, the latch circuit 25 and the falling edge detector 26 are reset
Is set. In this case, does the MAX / R signal occur?
The maximum temperature measurement value Nx so far is stored in the storage unit 22.
Retained as is. This temperature measurement value Nx will be used for the next temperature measurement.
It becomes the previous temperature measurement value. Furthermore, one of the inputs of the NAND gate 27 is input.
The GRST1 signal, which is the force, is "H", and the switch
The other input on the side of switch 1 is that switch 1 is closed.
Since it is "L", the MCK ON signal is "L".
But next, when switch 1 is opened, the NAND gate
Both 2 inputs of 27 become "H", therefore MCN
The ON signal becomes "H", and the oscillator 14 and the counter 15
Is inactive. Of course, the counter 16 and the latch circuit
17 is also in the reset state. In this way, the temperature measurement operation is completed, and the system
Stop. A concrete description of the control signal generator 18 described later is given.
As is clear from the explanation of the example, the main body case 1 is
If you want to shake and then twice,
As explained in FIG. 7, the previous temperature measurement value is displayed on the display unit 11.
The GRST2 signal is also displayed by the second display after being displayed.
It becomes “L” and all segments of the display 11 are lit up.
“LO ° C” display value and maximum value of current measured value are displayed.
It With this kind of usage, the previous temperature value and the current temperature value
You can see the
If you shake it, the temperature will be measured and you can know the current measured value.
Wear. Also, the main body case 1 is shaken twice at the beginning to display the current state.
Display the measured temperature value, and then main body case 1
If you shake twice, the current temperature reading will continue to be displayed.
Done. If you shake once after shaking twice, the motion will stop.
This is as described above. As described above, in this embodiment, the switch
By changing the number of times of opening and closing 3,
The current measured value and the
The opening and closing of 3 is done only by shaking the body case 1.
Therefore, the operation becomes very easy. Especially for thermometers
If the main body case 1 is shaken like a conventional mercury thermometer,
The previous temperature measurement value is displayed and the temperature measurement is opened by the user's action.
Start, stop and temperature readings are displayed, so even women and women can
It is easy to handle without feeling any resistance. If the temperature measurement value is out of the measurement range,
Display different numerical values, symbols, and patterns between the measured temperature value and the current measured value
This is done by using
It can be clearly distinguished from the measured temperature value. Further, before starting the temperature measurement, the storage unit 22 is reset.
The stored content becomes 0, and as a result, the display 11
“LO ° C” is displayed, but this causes the temperature measurement to open.
You can confirm that it has started. Furthermore, when starting temperature measurement,
Display 11 lights all segments before starting
Causes the display decoder 24 and the display 15 to operate normally.
You can confirm that you do. FIG. 9 shows a component of the control signal generator 18 shown in FIG.
36 is a block diagram showing an example of a body, and 36 is a 1-bit biner
A counter consisting of a recounter, 37 is a multi-vibrator
Calculators, 38 and 39 are falling edge detectors, and 40 is an edge detector.
Detecting unit 41, RS type latch circuit 42, 43, 4
Reference numeral 4 is an AND gate, and 46 is an inverter.
Corresponding parts are given the same reference numerals. In FIG. 9, the counter 36 is a latch circuit.
1 is counted for each falling edge of 17 Q_ outputs,
The Q output is inverted every count. Mono Multi Vibe
Lator (hereinafter referred to as MM) 37, falling edge detection unit
38 and AND gate 42 are continuously shaken by the main body case 1.
(Thus switch 3 (Fig. 6) is activated continuously)
The number of operating times detection circuit is configured to detect
When the body case 1 is swung once, the AND gate 42
No pulse ST is obtained from, but when swinging twice,
The pulse ST is obtained from the AND gate 42.
The latch circuit 41 is set. That is, the MM 37 outputs Q_ of the latch circuit 17.
Triggered on every rising edge of force, this trigger
An output signal that becomes “H” is supplied to the AND gate 42.
The falling edge detector 38 outputs the Q_output of the latch circuit 17.
A pulse DE1 representing each falling edge is output. this
The pulse DE1 is a period during which the output signal of the MM37 is "H".
The pulse ST passes through the AND gate 42. here
Then, during the period when the output signal of MM37 is "H",
1 of the main body case 1 when the base 1 is shaken twice
The Q_ output of the latch circuit 17 rises due to the first swing.
Q_out by the next swing of body case 1
It is set slightly longer than the time until the falling edge of force,
It should be set in consideration of the speed at which the user's body case 1 is shaken.
Needless to say. Therefore, the first time of the main body case 1
Along with the swing, the falling edge of the Q_ output of the latch circuit 17
Pulse DE1 representing the edge passes through AND gate 42.
The pulse DE1 generated by the second swing is
Pass through the NAND gate 42. This allows the body case
It is judged whether 1 was shaken once or twice.
Latch circuit 41 is set only when it is shaken twice.
Be done. When the counter 36 is swung twice,
, Its Q output is inverted twice in a row and returned to the initial level.
It The counter 36 and the latch circuit 41 are turned on respectively.
Can be reset at any time or by suitable resetting means
Yes, at this time, the Q output of the counter 36 is “L”,
The Q_output of the H circuit 41 is "H", and these are the initial values.
It is a level. Rise and rise of the Q_output of the latch circuit 41
The falling edge is detected by the edge detection unit 40, and these errors are detected.
The pulse EG indicating the flag is used to reset the counter 36.
Can be This means that the latch circuit 41 has been reset.
Always reset the counter 36 and stop the display circuit.
It is for making it. Also, the falling edge of the output signal of MM37
Is detected by the falling edge detector 39, and the falling edge is detected.
The pulse DE2 representing the
It In this pulse DE2, the Q output of the counter 36 is
Only when it is "H", it passes through the AND gate 43 and the pulse R
The latch circuit 41 is reset as E. By this.
After the latch circuit 41 is set, the body case 1
When shaken, the latch circuit 41 is always reset.
When the main body case 1 is shaken twice, the falling edge
Before the detection unit 39 generates the pulse DE2, the counter 3
Since the Q output of 6 is inverted twice and becomes "L",
The switch circuit 41 is not reset. The latch circuit 41 is
After set, the body case 1 is shaken once and latched
When the circuit 41 is reset, the edge detection unit 40
Generates an EG, which also resets the counter 36
To be done. The EN signal inverts the Q output of the counter 36.
The GRST2 signal is inverted by the data 46.
Q_ output of the H circuit 41. Also, the GRST1 signal is
The EN signal and GRST2 signal are processed by the AND gate 44.
Is the signal obtained by First, the main body case 1 is swung once and swung.
Of this specific example when the switch 3 (FIG. 6) operates only once.
The operation will be described with reference to the timing chart of FIG.
It The body case 1 is shaken to activate the switch 3.
Then, as described above, the Q_output of the latch circuit 17
Is inverted from "H" to "L", and the counter 36 counts by 1.
Unto. As a result, its Q output changes from "L" to "H".
And the EN signal is inverted from "H" to "L" and GR
The ST1 signal also reverses from “H” to “L” and the previous temperature measurement value
Is displayed. On the other hand, the fall of the Q_output of the latch circuit 17
The falling edge detection unit 38 generates a DE1 pulse at the edge
However, the latch circuit 17 is reset as described above.
Is output until the Q_output becomes “H”.
Since the force signal does not become "H", the latch circuit 41 is reset.
Q_ output, and therefore the GRST2 signal,
It is held at "H". Then, the body case 1 is shaken once again.
Then, the counter is counted at the rising edge of the Q output of the latch circuit 17.
Data 36 counts by 1 and its Q output is from "H"
It is inverted to "L" and the EN signal is inverted from "L" to "H".
It Also in this case, the MM 37, the falling edge detection unit 38 and the
And AND gate 42 operate as described above, and the latch circuit
41 is not set. Therefore, the GRST1 signal also
The display circuit is stopped by reversing from "L" to "H". Next, when the main body case 1 is shaken twice
Will be described with reference to the timing chart of FIG.
It In this case, the first operation of the switch 3
At the falling edge of the Q_ output of the latch circuit 17 associated with
The Q output of the counter 36 becomes "H", but the switch 3
With the second operation, the Q_ output of the latch circuit 17 rises.
It immediately becomes "L" at the falling edge. Therefore, the EN signal is
It becomes "L" only during the period when the Q_output is "H". This
, The EN signal becomes "L" and GRST1
The signal also becomes "L", and the display decoder 24 (Fig. 6) resets.
Is set. Therefore, for a short period of time,
The value is displayed. On the other hand, as described above, the latch circuit 4
1 is the second falling edge of the Q_ output of the latch circuit 17
And its Q_ output, that is, the GRST2 signal is
Invert from "H" to "L". At the same time, above
As described above, the Q output of the counter 36 is inverted from "H" to "L".
Then, the EN signal is inverted from "L" to "H", so GR
The ST1 signal is held at "L" as it is, and the display 11
Of all segments of, the display of "LO ℃", the current measured value
The maximum value is displayed. In this case, the Q_output of the latch circuit 41 rises.
A pulse EG is generated from the edge detector 40 at the falling edge.
However, depending on the falling edge of the Q_output of the latch circuit 17,
Therefore, the Q output of the counter 36 has already changed from “H” to “L”.
Since it is reversed to, there is no particular problem. Also, the falling edge
The detecting unit 39 also detects every falling edge of the output signal of the MM 37.
Pulse DE2 is generated on the
Since the Q output of the latch 36 is "L", the latch circuit 41
It will not be reset. Thereafter, the body case 1 is shaken once.
And the resulting falling edge of the Q_ output of the latch circuit 17.
The counter 36 counts by 1, and the Q output is
It becomes "H". Also, the rise of the Q_ output of the latch circuit 17
MM37 is triggered at the edge of
Force signal is generated, but falls at the falling edge of this output signal
The pulse DE2 is generated from the edge detector 39. this
At this time, since the Q output of the counter 36 is "H",
A pulse RE is output from the gate 43 and the latch circuit 4
1 is reset. As a result, the GRST2 signal is
The temperature measurement operation is stopped by reversing from "L" to "H". When the latch circuit 41 is reset,
The edge detector 40 at the rising edge of the Q_output.
Pulse EG is generated and the counter 36 is reset
The Q output is inverted from "H" to "L". For this reason,
EN signal is inverted from "L" to "H" and GRST1 signal
Also changes from "L" to "H" and the operation of the display circuit stops.
It Next, first shake the main body case 1 once, and then
The operation when swinging twice after
Chart will be used for explanation. In the first swing, it was explained in FIG.
As described above, the Q output of the counter 36 is “H”,
Signal and GRST1 signal are "L", and the latch circuit 41
The GRST2 signal from is "H". At this time,
The measured temperature value is displayed. Next, the main body case 1 is swung twice.
Then, the first falling edge of the Q_ output of the latch circuit 17
Then the Q output of the counter 36 is inverted from "H" to "L".
The EN signal is inverted from "L" to "H", and the latch circuit 17
Q output of counter 36 at the next falling edge of Q_output of
Is inverted from "L" to "H" and the EN signal is changed from "H"
Invert to "L". Further, as described above, the latch circuit 1
Latch circuit 41 at the second falling edge of Q_output 7
Is set and the GRST2 signal goes from "H" to "L".
Roll over. Edge detection is performed at the falling edge of this GRST2 signal.
An EG pulse is generated from the output section 40, and the counter 36 resets.
Is set. Therefore, the Q output of the counter 36 is
Is "L" at the second falling edge of Q_ output of circuit 17?
, It becomes “H”, but immediately by the above EG pulse
Invert from "H" to "L". In this way, the body case 1 is swung once.
Then, after displaying the temperature measurement value last time, shake it twice more,
The EN signal becomes "H" and the GRST2 signal becomes "L".
, All segments of the display 11 are turned on, and "LO ℃" is displayed
The maximum value of the measured value and the current measured value is displayed. The main body case 1 is shaken twice at first, and the current temperature value is measured.
After displaying the
If shaken, the current temperature reading will continue to be displayed.
It The timing chart in this case is shown in FIG.
The operation by the second swing of the main body case 1 is the latch.
Except that the GRST2 signal from the circuit 41 is "L"
The operation is the same as the first two-time swing, and the explanation is omitted.
I will omit it. As described above, the control signal generator 18
According to, shake the main body case 1 once or twice.
The displayed temperature measurement value differs depending on whether or not. The previous temperature measurement
After the displayed value and the current measured value are displayed, shake the main unit case 1 once.
Then, the operation of the display circuit is stopped. The specific example of the display circuit has been described above.
Source voltage V_DDIs a main unit case 1 with a built-in battery
It may be applied to a push switch, etc.
Power supply voltage V_DDIs turned on and off as needed.
You may ask. In addition, the power supply voltage V_DDAs a commercial exchange
It may be a rectified flowing voltage. In the above description, specific numerical values are shown.
However, these are just examples, and this invention
It is not limited by these values. [0104] As described above, according to the present invention.
For example, due to the difference in the operation of a single switch,
And the current temperature measurement value are switched and the temperature measurement operation is started and stopped.
Can be performed, and the switch is
It is configured to operate by shaking the
Therefore, the conventional mercury body temperature of shaking the main body case
It operates with the same operation as the meter and is extremely easy to operate.
It is extremely easy to handle and easy to configure.
It is possible to obtain the excellent effect that it can be downsized.
You can

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram showing an embodiment of a temperature measuring device according to the present invention. FIG. 2 is a diagram showing an operating principle of the switch of FIG. FIG. 3 is a configuration diagram showing a specific example of a switch. FIG. 4 is a configuration diagram showing a specific example of a switch. 5 is a perspective view showing an arrangement example of each component in the main body case of FIG. 1. FIG. 6 is a block diagram showing a specific example of a display circuit used in the embodiment shown in FIG. FIG. 7 is a timing chart for explaining the operation of the display circuit shown in FIG. 6 when the main body case is swung once. FIG. 8 is a timing chart for explaining the operation of the display circuit shown in FIG. 6 when the main body case is swung twice. 9 is a block diagram showing a specific example of a control signal generator in FIG. 10 is a timing chart showing an operation example of the specific example shown in FIG. 11 is a timing chart showing another operation example of the specific example shown in FIG. 12 is a timing chart showing still another operation example of the specific example shown in FIG. FIG. 13 is a timing chart showing still another operation example of the specific example shown in FIG. [Explanation of reference numerals] 1 main body case 3 switch 11 indicator 18 control signal generating unit 19 counter 21 temperature measuring unit 22 storage unit 24 display decoder

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Isao Imagawa             4680 Ikata, Ikata, Hachijo-machi, Tagawa-gun, Fukuoka             State Hitachi Maxell Co., Ltd.              (56) References JP-A-59-104590 (JP, A)               Actual development Sho 59-100233 (JP, U)

Claims (1)

[Claims] 1. A switch that is activated each time the case is shaken, and a first control signal is generated when the switch is shaken once within a predetermined fixed time in response to the operation of the switch, A control signal generating section that generates the first control signal and the second control signal when the switch is shaken twice consecutively within the fixed time; and a counting operation after the generation of the second control signal. And a reset signal generator that generates a reset signal having a predetermined pulse width at a predetermined count value of the counter, and a detection pulse having a constant cycle after the reset signal is generated, according to the count value of the counter. A control unit that generates the temperature, a temperature measuring unit that detects the temperature for each detection pulse, and a reset state only in the pulse period of the reset signal,
A storage unit that stores the detected temperature data of the temperature measuring unit that indicates a temperature higher than the stored temperature data and that holds the temperature data unless the reset state is entered, and the storage unit that stores the temperature data by the first control signal. The display unit that starts the display operation of the temperature indicated by the stored temperature data, and the case is displayed when the display unit displays the temperature indicated by the temperature data stored in the storage unit after reset. The counter, the reset signal generator, the controller, the temperature measuring unit, and the display unit are driven by the first control control signal generated from the control signal generator by shaking only once within a fixed time. A reset unit for setting a reset state is provided, and by shaking the case only once within the fixed time, the temperature of the previous measurement stored in the storage unit is displayed on the display unit, and the case is set to the fixed state. 2 times in time By shaking Te, the temperature measuring device storing temperature data measured this time in the storage unit, the temperature indicating the temperature data and displaying in the display unit.