JP3083097B2 - Infrared imaging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Industrial applications]

The present invention relates to an infrared imaging device, and more particularly, to an infrared imaging device connectable to an external device such as an image processing device.

2. Description of the Related Art

Image signals obtained by imaging with an infrared imaging device can be used for various purposes by performing various processes,
Therefore, it is desirable to be able to connect to an external image processing device. When the imaging apparatus is connected to an external image processing apparatus, it is desirable that all information essential for the image processing apparatus can be sent from the imaging apparatus. Further, it is desirable that the apparatus can exchange signals with each other and can remotely control the imaging apparatus even from the image processing apparatus. The present invention has been made in view of the above-mentioned technical problems, and has been devised to effectively solve the problems. Therefore, an object of the present invention is to provide an infrared imaging device capable of exchanging signals with an external device so that the image processing device can be connected and controlling the imaging device itself based on a signal from the external device.

[Means for Solving the Problems]

The infrared imaging device of the present invention is an infrared imaging device connectable to an external device, a key for changing settings of the infrared imaging device, a central processing unit, and a signal between the external device and the central processing device. The central processing unit, when receiving a signal from the external device via the interface, determines whether the signal is a signal for validating the key or a signal for invalidating the key. If the signal is invalid, the infrared imaging device is controlled based on a signal received from the external device via the interface.

[Action and effect of the invention]

In the infrared imaging device according to the present invention, since the interface enables information exchange between the central processing unit of the imaging device and the external device, the connection between the imaging device and the external device becomes possible. Further, the infrared imaging apparatus determines whether the signal received from the external apparatus is a signal for validating or invalidating the setting key of the infrared imaging apparatus. And controls the infrared imaging device based on the signal received from the device. Therefore, in the present infrared imaging apparatus, control can be performed by either key operation of the infrared imaging apparatus main body or a signal from an external apparatus, and further, an external apparatus can instruct whether to perform control by either of them. it can.

【Example】

 FIG. 1 shows a preferred embodiment of the present invention.
This will be described with reference to FIG. Objects that have a temperature higher than absolute zero must emit infrared light.
Emissions are correlated with the temperature of the object.
There is a clerk. This device uses this to
Captures infrared radiation emitted from the
Display the change in the amount of infrared light as a difference in brightness.
It is. FIG. 1 is a block diagram showing each component in the apparatus of this embodiment.
FIGS. 2A and 2B show that the apparatus of this embodiment performs two-dimensional scanning.
It is a schematic diagram for clarification. Infrared rays from objects are multifaceted
After being reflected by the mirror 2, the infrared condenser lens 3 and the observation temperature range
Multi-element infrared detection through the filter 4 selected by
The light is focused on the detector 5. Infrared detector 5 was even incident
A signal corresponding to the amount of infrared light is output. By the way, polygon mirror
Is rotated at a constant speed in one direction by a motor 41. did
Therefore, one van is rotated by rotation of one face of the polygon mirror 2.
The scanning is performed in the horizontal direction (FIG. 2). One band is many
Includes many lines corresponding to the number of elements of element detector 5
Will be. On the other hand, the adjacent surfaces of the polygon mirror 2 are fixed to each other.
Since the polygon mirror 2 is rotated,
The first surface of the polygon mirror 2 is the first band B₁The second surface is the second
Band B_TwoThe face and the band correspond to each other,
Scanning is performed in the vertical direction. In this way,
Scanning in the vertical direction is performed, and the multi-element infrared detector 5 successively performs scanning.
By receiving light, two-dimensional infrared information of the object can be obtained.
You. The output signal of the detector 5 obtained in this way is
Amplified by 6 and signal-processed by a low-pass filter 7
Thereafter, it is input to the offset injection circuit 8. Offset note
The input circuit 8 includes a low-pass filter 7 as described later.
D / A (digital / analog) converter 11
The output signal is injected. This allows low pass
The reference level (offset level) of the output signal from the filter 7
Bell) can be changed freely. Offset note
The output signal of the input circuit 8 is input to the multiplexer 12 and
The signals corresponding to the number of elements of the multi-element detector 5 are multiplexed one after another.
A / D (analog)
(Log / digital) converter 14. A / D converter 14
The signal converted into a digital quantity by the
It is led to. On the other hand, the polygon mirror is rotating,
It is detected by the photo sensor 16. Photo sensor
The output of 16 is input to the input address via the timing generator 17.
Is input to the counter 18 and the rule is set according to the rotation of the polygon mirror 2.
Counted correctly. This count value is stored in image memory 15
Is supplied as an address. Then, the image
The digital signal guided to the memory 15 follows this input address.
Are stored regularly in order. Thus a polygon mirror
2 makes one rotation, image data for one screen
It will be stored in the image memory 15. Stored image
The data in the memory is read and displayed.
This will be described. TV signal output from TV sync signal generation period 19
Is synchronized with the output address counter 20.
You. The output address counter 20 is based on the TV synchronization signal.
Address for specifying the data in the image memory 15.
Are generated one after another. Output of output address counter 20
The force is input to the address of the image memory 15 and specified.
Address data is read out one after another and the γ-PROM (gamma
-Programmable read only memory (21).
The γ-PROM 21 performs γ correction, and generally, the temperature of the object is
Degree and energy, CRT screen voltage and brightness, and human eyes
Because the amount of light incident on the
The temperature of the object and the amount of human perception through the γ-PROM 21
Corrected to be linear. Thus gamma corrected
The output of the γ-PROM 21 input to the D / A converter 22
Converted to the amount of nalog. The synthesis circuit 23 is obtained by the D / A converter 22.
Analog amount and various types of characters generated by the character generation circuit 25
Is synthesized. The output of the combining circuit 23 is the display device 24
Is displayed. Note that the output of the synthesis circuit 23 is
It can be supplied to the outside as a decoded video signal.
So, for example, this decoded video signal
Can be displayed on a VTR.
If supplied to a video tape recorder, video recording is also possible.
Terminal 42 outputs the VTR start / stop signal.
Terminal. As described above, an infrared image is generated and displayed.
On the other hand, the CPU (Central Processing Unit) 9 controls the device and the temperature of the object.
, And control of character display. Below, infrared
Focus adjustment and offset level related to image adjustment
The adjustment of the gain and gain will be described. These are key sui
That the key switch on switch 29 has been pressed
Is detected by the CPU 9. When the focus key is pressed, the CPU 9 detects this and presses the focus key.
Outputs a motor drive signal to the focus lens drive circuit 30
You. The motor 36 drives the infrared condenser lens 3
A motor, and a motor drive signal is applied to the motor 36
As a result, the infrared condenser lens 3 moves up and down,
Dust matching is performed. Offset adjustment includes manual offset adjustment and
There is a port offset adjustment, the switching of which
The CPU 9 detects that the switch has been pressed and performs the operation. Auto
For offset adjustment, CPU 9 is set to auto / manual
The automatic signal is sent to the conversion circuit 39,
Enable the signal to be output. The comparison circuit 38 receives the signal of the amplifier 13
When the level is higher than the constant value Va, a down signal, the constant value Vb
It is configured to output an up signal when it is lower than
ing. Va and Vb are determined by circuit constants. on the other hand,
The clock pulse is output from the CPU 9 to the counter 10.
Therefore, the input value of the D / A converter 11 changes and the offset
The input changes. Thus, in the case of offset adjustment
Is adjusted so that the output level of the amplifier 13 is between Va and Vb.
Feedback is applied and the offset injection volume is automatically determined.
Is determined. For manual offset adjustment, CPU 9
Send a manual signal to the new switching circuit 39 and compare
Invalidates the signal input from the circuit 38 and outputs the signal from the CPU 9.
Up / down signal to be sent to counter 10
To Then, the CPU 9 outputs the up / down signal.
Output a clock pulse to the counter 10 during
The input value of the converter 11 changes and the offset injection amount changes
You. For gain adjustment, switch the circuit gain and filter
Switching (both are collectively called window adjustment)
There is. When switching the circuit gain, the CPU 9
Change the gain. When switching filters, CPU 9
Outputs range motor drive signal to printer filter drive circuit 31
Then, the filter 37 is switched by driving the motor 37. Next, the CPU 9 calculates the temperature from the signal obtained by the detector 5.
The calculation of will be described. The output signal of the preamplifier 6 is supplied to the sample-and-hold circuit 32.
Is input to the
Is pulled. The sample-and-hold signal is multi
It is input to PLEXA 34. On the other hand, the detector 5
Signal relating to the sensitivity corresponding to the temperature of the
The output signal of the temperature sensing element 33 built in
Is input to the server 34. These three signals are multiplexed one after another.
And is input to the A / D converter 35,
And is taken into the CPU 9. CPU9 has these three
The temperature of the object is calculated based on the digital amount of. that's all
Is calculated by a specific key located on the key switch 29.
Executes when is pressed. In addition, CPU9 is a clock IC
(Integrated circuit) Know the current time by accessing 28
And sends a character signal to the character generation circuit 25.
In this way, the above-mentioned calculated value of the temperature of the object,
Character information can be displayed on the display device 24. The ROM (read only memory) 26 contains the operation of the CPU 9.
The program for executing
In addition, the RAM (arbitrary access memory) 27 stores data by the CPU 9.
It is used for storing. E^TwoPROM (element
Critical erasable programmable read only
Memory) 40 has calibration used by CPU 9 to calculate temperature
Information is stored. The key switch 29 includes various keys shown in FIG.
It is the case when it is arranged. Key switch 29 is up
As mentioned, the focus mask for adjusting the infrared image
Key for adjusting offset and window.
Has been established. When you press a switch, it crosses at that switch
Pattern is conducted. And
When detecting which switch has been pressed, the CPU 9 first
Output terminal O₁To a high level. And input terminal I₁From
I_FourTo scan for high-level terminals.
You. Now, assuming that switch F is pressed, the output terminal
Child O₁And input terminal I_ThreeBecomes conductive and the input terminal I_ThreeIs high level
Become. The CPU9 uses this combination of high-level terminals.
Then, which switch is pressed is detected. Sui
If none of the switches N, F, W / B, F / M are pressed, enter
Terminal I₁To I_FourAre all low level. In this case, CPU9
Is the output terminal O_TwoTo high level and input terminal I₁
To I_FourTo scan. Output terminal O_ThreeThe same applies to
Can. The functions of these keys are briefly described below.
Just explain. MODE key: Adjust the initial display screen and infrared image
Switch the screen to be used. function key; select which setting value can be changed
Select. up / down key; Changes the selected setting value. VTR key; When using a VTR, start / stop the VTR
Output the signal of the loop. O / W key; window adjustable with auto offset
Or make the offset manually adjustable
Or window adjustable with manual offset
Choose what to do. +,-Key: Change offset and window. F / M key; temperature measurement, screen freeze (hereinafter, freeze)
), Save temperature value to memory, release freeze
I do. W / B key; Display high temperature area white or black
Or choose. F, N key: Adjust the focus. First, in # 1, the initial registers of the CPU 9 and the RAM 27 are initialized.
, E^TwoThe calibration information stored in PROM27 is stored in RAM27.
Perform processing such as insertion. Next, go to # 2,
Display a surface. In # 3, specify on the initial display screen
Flashes. This specific character flashes
What can be changed now with the up / down key
Is shown. For example, in FIG. 6A, “INTERNAL O
The display character “NLY” is flashing, but in this state up /
Pressing the down key changes the display characters to, for example, `` WIDE ''.
It will be changed. After # 3, proceed to # 4 and press the MODE key
A check is made to see if is pressed. # If pressed
Proceed to 5 and if not pressed, proceed to # 9 and press the function key.
Key or up / down key is pressed.
If it is not pressed at the stage, the process returns to # 2. Functi in # 9
If either on key or up / down key is pressed
If so, go to # 10 and follow the key down to initialize
Change the setting of the display value on the display screen, and change the character with # 11
And return to # 2. For example, in FIG.
Press the Option key to move the blinking character from "WIDE" to "C".
FIG. And in FIG. 6 (C),
Then press the function key several times to display the time
Flashes the display of '0' and press 'up' key from '30' to '3'
1 is shown. MODE key with # 4
If is pressed, proceed to # 5 to adjust the infrared image.
Switch to the next screen. In the figure, the state shown in FIG.
The screen is switched to the state of FIG. 7A. In # 6
Flashes a specific character on the infrared image adjustment screen, and
Indicates whether the setting value of can be changed. That is, the offset is
Whether it can be adjusted manually, or
Whether the window can be adjusted etc.
The user can be notified by flashing. Fig. 7
In (C), the display of “OFM” is flashing, and it is currently off.
Fig. 7 shows that the set can be adjusted manually.
In (D), the display of “H6” is flashing and the current window is
This indicates that adjustment is possible. Next, in # 7,
Scan key and check if key is pressed
I do. If it is not pressed at all, the process returns to # 5. Some kind of key
Key was pressed in # 8, which key was pressed
Is checked to determine the key. And each
And the process returns to # 5. By key determination
If the MODE key has been pressed, return to # 2 and
The display switches to the display of the clock display, and the time and temperature units are set.
The fixed value can be set again. If the F / M key has been pressed, go to # 12 and
Measurement, frozen state, or
RAM27 to indicate if the
Checks whether the flag FRZ provided in the box is 0
I do. If the flag FRZ is 0, rewrite FRZ = 2 in # 13
The temperature is calculated by an interrupt as described later.
To do. If FRZ is not 0, # 14 and FRZ = 2
Whether FRZ = 2 or not and proceed to # 15
Is rewritten as FRZ = 1. And in # 16, the infrared image
Prohibits writing to image memory 15 and permits only reading
To freeze the screen. FRZ = 1
In this case, the process proceeds to step # 17, and FRZ = 0 is rewritten. Soshi
And allow writing of infrared image to image memory 15 in # 18
To release the frozen state of the screen. And at # 19 F /
Determines whether the M key has been pressed for a certain period of time (for example, 2 seconds)
Check, if pressed, interrupt processing in # 19-1
The temperature value and the like calculated in are saved in the RAM 27. save
The value of the function key and up / down
Displayed on the screen by key. Next, interrupt at # 19-2
Clear the temperature display value calculated and displayed in the process
You. If it has not been pressed for a certain period of time, # 19-2
Press to clear the temperature display value. Then, the process returns to # 5. If the W / B key has been pressed, proceed to # 20 and proceed to γ-PROM2
Invert the high order bit of 1. The γ-PROM 21 has a high temperature
Are displayed in white or black
Yes, switch between the two by the upper bit
I have. After performing this process, the process returns to # 5. When the F and N keys are pressed, the focus signal is
It is output and drives the infrared condenser lens 3. In # 22, F
Key to indicate that the key or N key is being pressed.
The character is sent to the character generation circuit 25 to be displayed. next#
Go to 23 and keep pressing F or N key
Check if it is pressed continuously, return to # 21
Continue to output focus signal. F key or N key
If it is released, go to # 24 and stop the focus signal.
To stop the driving of the infrared condenser lens 3, and press the F key.
Key or the letter indicating that the N key is being pressed.
A. Then, the process returns to # 5. If the VTR key has been pressed, go to # 25, and
Start / stop signal output to start / stop VTR recording
I do. In # 26, it tells you if you are currently recording
Character signal to the character generation circuit 25 for display.
Let it. Then, the process returns to # 5. If the O / W key is pressed, the process proceeds to step # 27. Here O / W key
Is pressed for more than a fixed time (for example, 2 seconds).
Click to go to # 28 if pressed. In # 28, now Oh
If it is in the offset state,
Auto / manual switching circuit to adjust
Output the signal to 39. When not in the auto offset state
Auto / mani
The signal is output to the dual switching circuit 39. And # 29
To adjust the auto-offset status, manually adjust the offset.
Can be adjusted, window is adjusted by manual offset
Provided in RAM 27 to indicate three possible states
Rewrite the flag OW_FLAG. For now, auto-off
The setting state is manual offset and the window is adjustable.
OW_FLAG is set to its value like FRZ,
3 states are expressed by changing
Sometimes used. Next, in # 29-1, this OW_FLA
In order to change characters based on G, a character generation circuit 25
To output a character signal. O / W key is pressed for more than a certain time
If not, in step 27-1, the current audio is output based on the OW_FLAG.
A check is made to determine whether the printer is in the offset state. Oh
If it is in the offset state, the process returns to # 5 without performing the process. Oh
If it is not in the port offset state, the manual
Offset adjustment with manual offset and manual offset
Switch between the command adjustment and the switch operation
Rewrite OW_FLAG to change character in # 29-1
I do. Then, the process returns to # 5. In # 6, based on the OW_FLAG,
Blinks a specific character, and
To adjust the offset or adjust the window.
Inform them that they can be adjusted. If the + or-key is pressed, go to # 30
move on. In # 30, the current offset based on OW_FLAG
Is selected or the window is selected.
Is locked. If offset is selected, go to # 31
Advance and output a clock to counter 10 to
Change the offset. Then, in # 32, the offset changes.
Sent to the character generation circuit 25 to notify that the
Output character signal. Next, in # 33, continue with the + key or
-It is checked whether the key has been pressed and
If so, the process returns to # 31, and the offset is continuously changed.
When the + key or-key is released, go to # 34
Stop changing the offset and change the offset
Clear the character to indicate that there is, and return to # 5. C
If the window is selected, go to # 35 and the window
Be changed. Gain or range filter of amplifier 13
To change the character indicating the window at switch # 36
A character signal is output to the character generation circuit 25. Then in # 37, continue
Check whether the + or-key is pressed.
If it is pushed continuously, return to # 35 and
Keep making changes. # 38 when + or-key is released
To change the window, and return to step # 5. If the function key has been pressed, the process proceeds to # 44.
Here the up and down keys change the immediacy
Whether it is possible to display the saved temperature value,
Whether the measurement mode can be changed.
The value of the flag DSP_L provided in the RAM 27 is changed for this purpose. Soshi
Returns to # 5, but in # 6, a special
Flash the fixed character, and use the up key or down key
Informs the user that any processing will be performed. If the up key or down key is pressed, #
At 39, it is checked whether the value of DSP_L is 0. DSP
If _L is 0, proceed to # 40 and change the value of
And the value is sent to the character generation circuit 25 at # 40-1.
Change characters. Then, the process returns to # 5. DSP_L is not 0
In this case, it is checked at # 41 whether DSP_L = 1 or not,
If _L = 1, the temperature value saved in # 42 is displayed on the screen.
Let me show you. And up key or down key at # 42-1
Check if it was pressed again and if not
Return to # 42-1 and pool, and if pressed, return to # 5
You. If DSP_L = 2, proceed to # 43 and set the temperature measurement mode
change. Here, whether to calculate the temperature value as an instantaneous value,
The average value in seconds (for example, 0.5 seconds or 2 seconds), or
Or the peak value is selected by the user. And #
At 48, the character generation time is displayed to indicate this temperature measurement mode.
The character is transmitted to the path 25. Then, the process returns to # 5. Next, the interrupt processing will be described with reference to FIG.
explain. The polygon mirror is rotating at a constant speed, but once
Every time it is turned on, it goes into interrupt processing. First, in # I-1
The flag FRZ changed by pressing the F / M key is 2
Check if there is. If FRZ is not 2,
The interrupt processing is terminated without performing the subsequent processing. FRZ
= 2, the following processing
Calculate the temperature. First, exit from the preamplifier 6 at # I-2.
To sample the center signal of the input signal
Output a sample pulse to the sample and hold circuit 32
You. Then, in # I-3, the sampled signal is A / D
Converted and loaded into the CPU 9 and the detector 5
A / D conversion of the sensitivity signal and the signal from the temperature sensitive element
take in. Then, in # I-4, based on the above three A / D values
Correction for temperature calculation is performed, and the temperature value is calculated at # I-5.
calculate. In # 1-6, the calculated temperature value is displayed.
For this purpose, a character signal is sent to the character generation circuit 25. And
Complete interrupt processing. 6 and 7 show specific examples of the display. No.
Fig. 6 shows the initial screen, and Fig. 7 (A) shows the infrared image adjustment screen.
Figure 7 (B) shows the values saved in memory
Screen. Below, the characters displayed on the screen
And will be described briefly. … Display of additional lens information attached to the device… Display of temperature unit… Display of time… Display of focus information: Press F key or N key
Is displayed as "F ↑" or "F ↓". … Display of window information: With change of circuit gain setting
The numerical value is changed from 1 to 7. Switching the range filter
Change bidirectionally between H and M, M and L
Is done. … Offset information display: Auto offset
"OFA" is displayed as "OFM" at manual offset
Be changed. Also, with manual offset, up key
Or the down key is pressed and the offset is changed
At this time, "OFM ↑" or "OFM ↓" is displayed. … Immediateness (emissivity) display… func when displaying temperature values saved in memory
Press the tion key to select this "LIST" and press the up key or
Press down key. … Display of temperature measurement mode and calculated temperature value… Display during recording… Display of temperature measurement mode: “S” indicates instantaneous value mode,
“AV1” and “AV2” are average mode, “PK” is peak mode.
Indicates the mode. "1" to "10" indicate memory numbers
The smaller number is the new memory number.
You. "E" indicates the immediacy, and "T" indicates the measured temperature.
ing. FIG. 5 shows the appearance of the apparatus. Body 50, grip 51, CR
It is composed of a T52 and a battery pack 53. First, the user turns on the power and displays the initial display screen.
I do. Select the temperature unit when measuring temperature while looking through the CRT.
Or set the time. This initial setting
After pressing, press the MODE key to adjust the infrared image.
Move to display. The user enters this display screen and
By adjusting the focus and window, the infrared image
I can catch it clearly. In addition, in FIG.
Scale 54 and offset indicator 55 are shown.
However, these are outside the area where the infrared image data is stored.
A portion of the external image memory 15 is
Allocated to the area of the offset indicator, CPU 9
Can be obtained by writing. As shown in FIG. 8, a cable 90 is used for this device.
An image processing device 91 can be connected. With this cable 90
The output of the preamplifier 6 in FIG.
It can be sent. In the figure, 92 is the operation
It is a work keyboard. In the image processing device 91, the detector 5
Since the obtained signal is supplied, the image processing device 91
These signals can be processed independently. Also as shown in FIG.
In addition, this apparatus and the image processing apparatus 91 are connected to each other via two lines.
Exchanges data. SIN is the data signal entering the device, S
OUT indicates a data signal sent from the device. this
Are input to the CPU 9 via the interface 9a. CP
U9 decodes the SIN and takes control of the device or restarts the interface.
Sending a signal to the image processing device 91 via the face 9a,
I do. Next, the exchange of this information will be described with reference to Table 1 and FIG.
explain. FIG. 10 is a flow chart showing signal reception and transmission.
FIG. 5 is a chart diagram, Keith executed in # 7 of FIG.
Performed with Can. Table 1 shows the received data and
Is shown. First, the CPU 9 presses the key switch at step # 7 in FIG.
Check if the key is pressed
After performing the corresponding action or when a key is pressed.
If not, the process proceeds to # C-1 in FIG. Where CP
U9 is the serial input data SIN signal from the image processing device
Interface where is stored as a parallel signal
Specify register 9a and read its SIN signal. Soshi
Proceed to # C-2 and follow Word 8 in Table 1,
This SIN signal is the function disabled state (Disable) of the device.
Or that the function is in the function banned state (Enable).
Is checked. Function disabled state, Disabl
In e, the function solution confirms that the grip key of
Forbidden state, that is, Enable means that the grip key works.
ing. If it is not Disable, this reception / transmission processing is completed.
And returns to # 5 in FIG. If it is Disable
Specifies the register of interface 9 with # C-20
And read the next SIN signal. Then, in # C-3, this SIN
Data analysis is performed. In the analysis results, this data
If the data has been instructed to control the apparatus, #C
-5 to # C-10 if a data output request has been issued
The process proceeds to C-11 to # C-16. Hereinafter, description will be made with reference to Table 1.
You. If it is Word6, use # C-5 to change the contents of bits 0 and 1.
Therefore, the range filter is switched. Contents of bits 0 and 1
For example, (bit 0,1) is (1,0) = low range, (0,1)
1) = middle range, (1,1) = high range
May be associated in advance. Range filter drive
Sends drive signal to circuit 31 and switches range filter
To return to # C-20. Next, this range filter switching will be described in detail.
explain. As shown in FIG. 11 (a), the low-range filter 10
0, middle range filter 101, high range filter 102
Are at predetermined positions on the range filter mounting plate 103, respectively.
Each is attached. Range filter mounting plate 10
3 is connected to a gear 105 and a plate holding plate 106 via a shaft 104
I have. The plate holding plate 106 includes two plates A107 and B108.
Each of these boards is
The photosensor A110 and the photosensor B110 are blocked.
Figure 12 shows how these components are arranged
FIG. Gear 105 is the range filter drive motor 3
7 range gear drive mode
By rotating the motor 37, the gear 105 is rotated.
And gear 105, plate holding plate 106, plate A107, plate B108, shaft
104, since the range filter mounting plate 103 is connected,
These rotate together. In plate A107 and plate B108,
There is a notch as shown in FIG.
Each of the range filters turns the true of the detector 5 by the rotation.
When the photo sensor A109 and photo sensor
The pattern in which substrate B110 is blocked by plate A107 and plate B108
Each is configured differently. And Fig. 11
As shown in (c), the photo sensor A109 and the photo sensor B1
Since the outputs P1 and P2 of 10 are input to CPU9,
(P1, P2) = (0,0), middle range (P
1, P2) = (0,1), low range (P1, P2) = (1,1)
0), and (P1, P2) depends on the position of the filter range.
The result is a different bit pattern. FIG. 13 is a flow chart illustrating step # C-5 in FIG. 10 in detail.
The chart is shown. In # C-50, according to the signal obtained in # C-20.
Sends the range filter drive signal to rotate the motor 37
Let it. Next, as described above in # C-51, the bits of P1 and P2 are set.
Bit pattern corresponding to the specified range
Check if it has been turned on. Corresponding bit pattern
The range filter is set in place.
Means that the range filter drive has been performed in # C-53.
Stop the motion signal and return to. Corresponding bit pattern
If not, proceed to # C-52 to drive the range filter
Check whether 2 seconds have elapsed since the motor 37 was driven.
Click. If not, return to # C-51 and return to P1, P again
Check the bit pattern of 2. High for 2 seconds
Range from the state where the range filter 102 is set
Low range filter 1 by rotating filter mounting plate 103
Enough time to get set to 00,
(P1, P2) corresponds to the specified range even after 2 seconds
Not being a bit pattern means, for example,
The filter drive motor 37 has failed or the range
The rotation of the mounting plate 103 is executed normally due to some cause.
It means not to be. The passage of time, for example, CP
A U9 free counter or the like may be used. # C-52
If 2 seconds have passed since the last check, the range
Since a filter error has occurred, the range
Range filter provided in RAM27 to indicate filter failure
Error flag is turned on. And return to. this
The error flag is used for Word3 as described later. Next, the case of Word7 will be described. Word7
In order to control the focus motor 36 in # C-6,
Outputs the focus drive signal to the focus range drive circuit 30.
Power. At this time, output is performed according to the contents of bits 2 to 5.
Clock frequency. Then proceed to # C-7
Again, specify the register of interface 9a again and
Read the SIN. Then, in step # C-70, this signal is
Status signal is checked. With status signal
If present, range information and focus limit information,
Indicates that the focus adjustment lens has reached its travel limit
It sends out the data. Must be a status signal
Then, in step # C-8, the focus control signal is
Whether to stop focusing, that is, bit 1 = 1
Check if bit 1 = 0, or
If it is not the focus control signal, the process returns to # C-6. Foca
Control signal and if bit 1 = 1, proceed to # C-9
The focus stop signal to the focus lens drive circuit 30
Is output. Then, the process returns to # C-20. In the case of Word 8, whether or not to enable in # C-10,
That is, it is checked whether bit 0 = 0. bit
If 0 = 1, return to # C-20, if bit 0 = 0
If the receiving / transmitting process is completed, the process returns to step # 5 in FIG.
You. In the case of Word0, the status of the device in # C-11,
That is, it sends out range information and focus limit information.
As shown in Word0 in Table 1, bits 0 and 1
Range information, focus limit by bit 2
Express information. For example, in the low range (bit 0,
1) = (1, 0), when in the middle range (bit (0, 1) =
(0,1), when in the high range (bit 0,1) = (1,1)
Bit 2 when corresponding and in focus limit state
= "1". Therefore, the current
The filter is a low-range filter and the focus limit
If it has reached the limit, it sends 05H (00000101B)
is there. Then, the process returns to # C-20. Here, detection of the focus limit of this device
This will be described with reference to FIGS. 17 and 18. Fig. 17 shows the focus limit drive of this device and
FIG. 2 is a perspective view illustrating a configuration of an focus limit detection device.
You. The infrared condenser lens 3 is stored in the holder 166.
The holder 166 is guided by the holder holding shaft 169 and
The shaft 167 is screwed. And at the end of the shaft 167
Gear 168 is fixed and engages with the rotating shaft of the motor 36
I have. Therefore, when the motor 36 rotates, this rotational force
Is transmitted to the shaft 167 via the gear 168, and with its rotation,
The holder 166 moves up and down. As a result, the lens
Focuses the infrared image passing through 3 on the infrared detector 5 and collects it.
Can be lighted. In addition, the shaft 167 is vertically stored with the holder 166 interposed therebetween.
Is fixed, and the limit of the movement of
Mitt). Further, a plate 170 is attached to the holder 166,
A plate for detecting the near limit and the far limit
Photo sensors 171 and 172 are provided. And the hall
When the movement of the damper 166 reaches the limit, the photo sensor 17
1,172 output limit detection signal blocked by plate 170
You. FIG. 18 is a circuit diagram of the focus limit detecting section.
is there. The motor 36 is a stepping motor.
Rotation / stop signal ▲ ▼ ▲ ▼
Operates when signal F / and clock pulse CFCS are supplied
I do. ▲ ▼ is high (H), F / is low (L)
And send a clock pulse, the motor 36 is near
Rotate to the side. Photo when focus reaches limit
The sensor 171 is blocked by the plate 170, and the output of IC-2 is "L"
Therefore, the output of IC-3 becomes “H” and the output of IC-4 becomes
The output becomes “L” and CPU9 detects this signal ▲ ▼
By doing so, the limit is detected. In the circuit example of Fig. 18, when the limit is reached, the IC
The output signal ▲ ▼ of -4 becomes “L” and the motor 36
It is designed to stop. In case of Word1, placed inside this device at # C-12
The ambient temperature is calculated by processing the signal of the temperature-sensitive element 33,
The signal is output according to a predetermined format.
The format is, for example, with a resolution of 0.5 ° C and a temperature value
The absolute value is composed of bits 0 to 6, and bit 7 is the infrastructure
Use as If the calculated temperature is + 16 ° C,
It sends out 20H (00100000B). And # C-20
Return to The ambient temperature is determined by the image processing device 91.
This is the data used when making measurements. In the case of Word2, in # C-13, the current detector
5 and gain change of preamplifier 6 due to ambient temperature
From this, the overall gain correction amount is determined, and a predetermined
Outputs a signal according to the format. The format is
For example, it was decided to send a value that is 128 times the correction amount obtained above.
Keep it. If the calculated correction amount is 1, 80H (10000
000B). Then, the process returns to # C-20. This
Is used when the image processing device 91 measures the temperature.
Used data. In the case of Word3, in # C-14, a predetermined file
Outputs a signal according to the format. Here is the error information
Will be described in detail. FIG. 14 is an example of a format indicating error information.
If the rotation of polygon (rotating polygon mirror) 2 is normal at bit 0, it is different
Indicates whether it is normal. In bit 1, E in which calibration information is stored^Two
Indicates whether reading of the contents of the PROM 40 has failed. With bit 2
Indicates whether the range filter has been set to the specified range
Is shown. In bit 3, the power supply voltage supplied to the device is positive.
Indicates whether it is normal or not. Bit 4 is the backup battery (Figure
The contents of RAM27 backed up by (not shown) are normal
Indicates whether or not. Then, it is set to 1 when abnormal. More than
The format of the error,
The information signal is output. For example, at the moment
01H (00000001B) when only the mirror of the surface mirror 2 is abnormal
Is sent. Next, these error detection methods
I will talk about it.・ Rotation of rotating polygon mirror: As shown in Fig. 16, rotating polygon mirror
# I-01 to the interrupt processing that enters each time the 2 rotates once
Add ~ 04. # I-01 starts free counter in CPU9
Read its value N_IIs stored in the RAM 27. And #I
−02, the value of the free counter read in the previous interrupt
_i-1And the value N of the free counter read in this interrupt_i
Find the difference between The polygon mirror 2 is rotating at a specified cycle
Time N_i−N_i-1Is known, but the N calculated at this time is_i
−N_i-1# I-03 to check if
Click. If it is within the regulation, proceed to # I-04, and rotate polygon mirror 2
Turn on the flag provided in RAM27 to indicate rotation failure of
You. Then, the process proceeds to # I-1. Whether this flag is on or off
Whether the rotation of the rotating polygon mirror 2 is normal or abnormal
Is detected.・ E^TwoReading the PROM: As described above, at # 1 in FIG.
E together with the initialization of the internal register of CPU 9 and RAM 27^TwoPROM40
To load the calibration information stored in the
Is going. E^TwoPROM40 has a thumb check area
In this area, the addition data of all data is stored.
Has been delivered. During this capture process, CPU 9^TwoPR
Read all the data except the added data of OM40 one after another and add
And the sum is E^TwoAddition data stored in PROM40
Check if it matches the data. Do not match
If so, E^TwoIn RAM27 to indicate PROM40 read failure
Is turned on. And this
E by seeing if the flag is on or off^TwoReading PROM40
Detects whether the insertion is normal or has failed.・ Range: Range filter not shown in the description of Word6
The error of the range filter provided in the RAM 27 to show good
-Flag is detected by seeing whether it is on or off.
You. Power supply voltage: A power supply voltage detection circuit diagram is shown in FIG. Correct
Normally, the CPU 9 detects “0”. If the power supply voltage is +
As the voltage drops from 10V, the output of the comparator increases.
And the CPU 9 detects “1”. Thus, CPU9
Power supply voltage is normal by detecting whether is "0" or "1"
Check for abnormalities.・ Back-up: A predetermined address is stored in RAM27.
Data is written, read this data and
Check if it matches the data. This che
If the check is executed in step # 1 of FIG.
A flag provided in RAM 27 to indicate a backup error
On. And whether this flag is on or off
Just look. As described above, look at each error flag, or
Obtains error information by detecting errors, and
The signal is output according to the format shown in Fig. 14.
You. If it is Word4, E in # 1^TwoStored in PROM40
Calibration information is stored in RAM27
Output these data one after another at # C-15.
You. It should be noted that the calibration information is stored in the image processing device 91 by the temperature.
This is the data used when making measurements. In the case of Word5, it is set on the initial display screen
Outputs transmittance data of all lenses one after another with # C-16
I do. These values are also added by the image processing device 91 to the additional lens.
Used to calculate the temperature readings when
It is. As described above, the image processing apparatus 91 controls this apparatus.
Can be operated remotely. Also, once disable signal
If you send it, the grip key of this device will not work.
The setting of this device is careless while using the processing device 91.
There is no change. Also, this device is
Calibrated and E^TwoCalibration information stored in PROM40
Therefore, this device is exchanged for the temperature measurement of the image processing device 91.
It is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing each configuration of the apparatus of this embodiment, and FIG.
FIGS. 3A to 3D are schematic diagrams for explaining that the apparatus of this embodiment performs two-dimensional scanning, FIGS. 3A to 3D are flowcharts showing a method of operating the apparatus of this embodiment, and FIG. FIG. 4 is a flow chart showing processing operations, FIG. 4 is a view for explaining various operation keys provided in the apparatus of the embodiment, FIG. 5 is a perspective view showing the appearance of the apparatus of the embodiment, FIG. 6 and FIG. FIG. 8 is a flow chart of FIG. 3, and FIG.
FIG. 9 is a flowchart illustrating the process of FIG. 11 in further detail, FIG. 9 is a diagram illustrating data exchange between the image processing apparatus of the present embodiment, FIG. 10 is a flowchart of signal reception and transmission, and FIG. It is a figure explaining a range filter drive mechanism, (a) is a perspective view of a range filter drive mechanism, (b) is a figure explaining a range filter position detection mechanism of a photosensor in a range filter drive mechanism,
(C) is a detection circuit diagram using a photosensor, FIG. 12 is a diagram showing an arrangement position of a range filter driving mechanism in the present embodiment device, FIG. 13 is a flowchart diagram for explaining in detail # C-5 in FIG. FIG. 14 is a diagram showing a format example of error information, FIG. 15 is a circuit diagram of a power supply voltage detection circuit, FIG. 16 is a flowchart diagram showing an error detection method due to a rotation failure of the rotary polygon mirror, and FIG. FIG. 18 is a perspective view showing a configuration of a limit driving device and a focus limit detecting device. FIG. 18 is a circuit diagram of a focus limit detecting unit. 9 Central processing unit 9a Interface 91
Image processing device as external device

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI H04N 7/18 G06F 15/64 325A (72) Inventor Kenji 2-3-13 Azuchicho, Chuo-ku, Osaka City, Osaka Osaka International Bill Minolta Camera Co., Ltd. (56) References: Japanese Utility Model Sho 64-23633 (JP, U) Japanese Patent Publication Sho 62-31383 (JP, B2)

Claims (1)

(57) [Claims] An infrared imaging device connectable to an external device, a key for changing settings of the infrared imaging device, a central processing unit, and transmission and reception of signals between the external device and the central processing device. When the central processing unit receives a signal from the external device via the interface, the central processing unit determines whether the signal is a signal for validating the key or a signal for invalidating the key, and invalidates the signal. The infrared imaging device controls the infrared imaging device based on a signal received from the external device via the interface thereafter.