JPH0244728B2 - - Google Patents

Description

[Detailed description of the invention]

(A) Field of Industrial Application The present invention relates to a fish body image input device, and more particularly to a fish body image input device having functions of automatically detecting and automatically removing clogged fish. (b) Prior art Regarding a device that processes input fish images,
We have already developed a fish processing system (patent application No. 57-229480),
A fish body direction identification device (Japanese Patent Application No. 104745/1982), a fish body dorsoventral identification circuit (Japanese Patent Application No. 167380/1983), etc. have been proposed. However, in all of these devices, (a) In order to prevent image blurring in the photoelectric conversion unit, the fish body is stopped once, the fish is positioned, and the image is captured by the photoelectric conversion unit, and then the image is captured by the photoelectric conversion unit.
Specific means to restart the fish body. (b) Even if photoelectric conversion is performed while the fish is moving, there is no notice on means for preventing image blur or for detecting when the fish has arrived within the imaging range. Therefore, the inventor of the present application proposed a fish body image input device (Japanese Patent Application No. 1983-1999) that includes the above-mentioned specific means. (c) Problems to be solved by the invention Unlike standardized industrial products, fish living in the natural world vary in body length, body width, body thickness, weight, overall shape, etc. even if they are of the same species. The distribution is wide.
(i) The device described by the inventor in the previous application uses a weight roller and a spike drum, which will be described later, to separate fish one by one and feed it to a tray. In some cases, the fish may become stuck between the weight roller and the spike drum, preventing fish from being fed into the tray. Furthermore, (ii) the device described in the previous application uses a weight roller and a spike drum to take out fish from the tray intermittently, but because the distribution of fish is wide, some fish cannot be taken out from the tray and the fish are stuck in the tray. Sometimes it stays. Due to the conditions (i) and (ii) above, fish may not enter the tray or fish may accumulate inside the tray. The present invention solves the problems of the prior art described above. (d) Means for Solving the Problems To achieve this, the present invention provides a separating means for separating fish one by one and supplying the fish to a fish imaging position, a fish imaging means for obtaining a fish image at the fish imaging position, and an intermittent feeding means for intermittently discharging the fish at the imaging position; a means for detecting the passage of the fish passing through the imaging position; a means for detecting the number of operations of the separating and feeding means; and synchronization with the output of the passage detecting means. and a means for giving an imaging instruction to the fish body imaging means, an output of the passage detection means, and an output of the operation number detection means, and when a blockage of the fish body is detected at the fish body imaging position, the fish body is detected. The present invention is characterized by comprising means for preventing the supply of fish to the imaging position, and means for removing the fish from the fish imaging position by inclining the conveyance path of the fish imaging position. (E) Effect The present invention relates to an input device for capturing images of fish, and (1) a means for automatically detecting and displaying a fish blockage or a means for removing a fish blockage, and (2) a means for automatically detecting and displaying a fish blockage, and (2) a method for removing a fish blockage when the fish blockage occurs. By providing a means for closing the passage to prevent subsequent fish from entering, a fish body image input device is realized that enables smooth operation of the device and further automation. (F) Embodiment FIG. 1 shows an embodiment of the fish body image input device of the present invention. 1 is a vibration trough. Vibration trough 1
is supported by a leaf spring 2, and when the eccentric crank 3 rotates, the vibration trough 1 reciprocates left and right.
The vibration trough 1 is a punched plate 4 with the burr side facing up.
is attached. When the vibrating trough 1 reciprocates, the fish 5 moves only in the direction of its head (from left to right in FIG. 1) due to the frictional force acting between the scales of the fish 5 and the punching plate 4. Fish 5's scales have directionality, so Fish 5 does not move in the direction of its tail. Therefore, when the fish 5 is put into the vibrating trough 1, the fish 5 advances toward the weight rollers described later. 6 is a shutter, 7 is an air cylinder, and 51
is an air valve that switches the flow of high-pressure air. When the air valve 51 determines the flow direction of high-pressure air according to the electric signal, the air cylinder shaft 7-1
When the air cylinder shaft 7-1 comes out of the case (extends) or the air valve 51 changes the flow direction of high-pressure air opposite to the above-mentioned direction, the air cylinder shaft 7-1 that had come out of the case enters the case (shrinks). )do. The shutter 6 is driven by an air cylinder 7-1,
It pivots approximately 90 degrees to close and open the passage for the fish 5 on the vibrating trough 1. FIG. 1 shows a state in which the air cylinder 7-1 is extended, that is, when the shutter 6 is open. When the air cylinder shaft 7-1 is retracted, the shutter 6 rotates approximately 90 degrees counterclockwise and blocks the passage of the fish 5. 8 is a spike drum, and a plurality of pins 8-1 are implanted in the circumferential surface. The shaft of the spike drum 8 is coupled to the rotation shaft of the rotary encoder 52 using coupling means (not shown). The rotary encoder 52 is used as a means for detecting the number of rotations, and generates one electric pulse when it rotates once. In the case of this embodiment, the shaft of the spike drum 8 and the shaft of the rotary encoder 52 are coupled at a rotational speed ratio of 1:1, so that the spike drum 8 rotates and the pin 8-1 is located almost directly above the shaft. When the rotary encoder 52 reaches the gill position, the rotary encoder 52 sends out a single electric pulse whose potential level changes from +12V to 0V. 9 is a weight roller supported by a shaft 9-1. The hole 9-2 of the weight roller 9 is set larger than the shaft 9-1, so when the weight roller 9 is pushed from bottom to top with a force that overcomes the weight of the weight roller 9, the weight roller 9 closes the hole 9-2 and the shaft 9-1. It can be lifted by a gap of 1. 10 is a saucer. A groove 10-1 is cut into the center of the tray 10, and when the spike drum 8 rotates, the pin 8-1 moves between the grooves 10-1. The pin 8-1 is arranged so as to protrude above the bottom of the saucer 10. The position of the shaft 9-1 is set so that the gap formed between the weight roller 9 and the saucer 10 is smaller than the thickness of the fish 5 when the weight roller 9 is sagging due to its own weight. The fish 5 that has advanced from the vibrating trough 1 is caught between the weight roller 9 and the receiving tray 10 and cannot advance further. The spike drum 8 rotates, and the pin 8-
When the fish 1 comes close to directly above, the pin 8-1 pulls the gills of the fish 5 and moves the fish 5 forward. The fish 5 pushes up the weight roller 9 and moves forward. Since the weight of the weight roller 9 is applied to the fish 5 from above, a single fish 5 passes through the weight roller 9 only when the pin 8-1 is caught on the gill. The weight roller 9 and the spike drum 8 feed the fish 5 at a rate of about one fish per second. 11 is a tray with a concave center. A feather brush 12 rotates counterclockwise to accelerate the fish 5-1 coming out of the weight roller 9. 1
9 blows out water onto the tray 11 with a shower pipe. The water coming out of the shower pipe 19 is transferred to the tray 1.
It flows through the tray 11 and acts as a lubricant, reducing the frictional resistance between the tray 11 and the fish 5-1 when the fish 5-1 moves through the tray 11, and at the same time serves to wash away dirt inside the tray 11. . 15 is an air cylinder. 53 is an air valve that switches the flow of high-pressure air. When the air valve 53 determines the flow direction of high-pressure air according to the electric signal, the air cylinder shaft 15-1 comes out (extends) from the case, or when the air valve 53 changes the flow direction of the high-pressure air to the opposite direction from the above-mentioned direction. , the air cylinder shaft 15-1 that had come out of the case enters (shrinks) the case. The tray 11 and the cylinder shaft 15-1 are connected via a link. Driven by the air cylinder shaft 15-1, the tray 11 becomes almost horizontal (the state shown in FIG. 1), or rotates downward in an arc shape from the state shown in FIG. 1 about the shaft 11-1. . In the illustrated example, the air cylinder shaft 15-
When 1 is retracted, the tray 11 is in a substantially horizontal state. When the air cylinder shaft 15-1 is extended, the tray 11 rotates clockwise by a predetermined angle and then stops. Therefore, when viewed in the direction in which the fish 5-1 moves, the tray 11 is tilted downward. To return the tray 11 to a substantially horizontal position, the air cylinder shaft 15-1 may be retracted. When moving down the tray 11, the fish 5-1 that has come out of the weight roller 9 advances along the slope of the tray 11, and the fish 5-1 in the tray 11 slides down from the tray 11. fish inside 5
-11 can be removed. 13 and 14 are a pair of optical sensors, 13 being a light emitting sensor and 14 being a light receiving sensor. Tray 1
Through the holes 13-1 and 14-1 drilled in 1,
A light beam is irradiated from the light emitting sensor 13 to the light receiving sensor 14. Fish 5- between sensor pairs 13 and 14
1, the mounting height of the sensor pair is set so that the fish 5-1 blocks the light beam. The light-receiving sensor 14 sends out an electrical output of +12V when receiving the light beam from the light-emitting sensor 13, and 0V when the light beam is interrupted. The fish 5-1 that has passed through the weight roller 9 is accelerated by the blade brush 12, runs inside the tray 11, and when it passes between the opposing pair of sensors, it blocks the light beam, so the electrical output of the light receiving sensor 14 is Based on the change, the passage of the fish 5-1 is detected, and the position of the fish 5-1, which indicates that the fish 5-1 has reached the imaging range of the television camera, is detected. 16 is a television camera. TV camera 16
is attached to the holder 18 with the lens facing downward. Reference numeral 17 denotes a strobe, which is attached to a holder 18 with its light emitting window facing downward. The sensor pair 13 and 14 detect the position of the fish 5-1, and the strobe 17 is sent through a control circuit (not shown).
An instruction to emit light is given to the TV camera 16, and an instruction to take an image is given to the television camera 16. Since the strobe light emission time is as short as several tens of microseconds, even if the fish 5-1 is running inside the tray 11, the posture of the fish can be imaged without image blurring. Recognition processing unit (not shown) (previous application, patent application 1983-
229480, 57-104745, and 57-167380) uses the video output of the television camera 16 to determine the dorsal and ventral regions and the head and tail. 108 is a spike drum, 108-1 is a pin,
109 is a weight roller, 109-1 is a shaft, 11
0 is a saucer. 108,108-1,10
The role of the fish 9,109-1 is to temporarily stop the fish 5-1 running in the tray 11 at the weight roller 109, wait for a waiting time, and then run the fish 5-1 again. It takes some time (hereinafter referred to as recognition time) for the recognition processing unit shown in the above-mentioned prior application to take in the video output from the television camera 16 and determine the dorsal/ventral, head/tail. Furthermore, as shown in Japanese Patent Application No. 57-229480, it takes some time (hereinafter referred to as setting time) to set the selection gates in a specified direction based on the judgment result of the recognition process. Therefore, waiting time is required. 108 and 108-1, 109, 109-1, 1
The settings for 09-2, 110 are 8, 8-1, 9, 9
-1, 9-2, 10, but the distance between the sensor pair 13, 14 and the weight roller 109 is shorter than the length of the fish body, that is, the weight roller 109 is shorter than the length of the fish body.
The interval is set so that when the fish is clogged in 9, the clogged fish blocks the light beam. The fish 5-1 runs inside the tray 11 and crosses the center pair 13, 14, and is caught between the weight roller 109 and the receiving tray 110 and stops once. Until the spike drum 108 rotates and the pin 108-1 catches the gills of the fish 5-1, the fish 5-1
However, there are many stops, so you can wait a long time. That is, the fish 5-1 are taken out from the tray 11 intermittently. In this embodiment, the spike drum 8 and the spike drum 108 have the same diameter, are driven at the same rotation period, and the phase angle between the pin 8-1 and the pin 108-1 is appropriately set to obtain the required waiting time. FIG. 2 shows a block diagram of an electronic circuit that controls the operation of the shutter 6 and tray 11. Reference numeral 81 is a waveform shaping circuit, which is a kind of filter, and removes chattering components contained in the electrical output of the light receiving sensor. 82 and 83 are counting circuits, which include a counter and 2
It has two input terminals. When one pulse is added to one of the input terminals 82 (A' in 83, the same order below), the counter adds +1, and when one pulse is added to the other input terminal (B' in this figure), Subtract -1 with the counter. The counting circuit calculates the pulse train applied to the (A') terminal and (B') in the counter, assuming that the appropriate number of pulses set in advance is No (N'o).
When the difference between the pulse trains applied to the terminals is greater than or equal to No (No'), an output is output to the terminal (C'). For example, when the difference between the pulse train at the (A') terminal and the pulse example at the (B') terminal becomes more than No (No'), the (C') terminal enters the state "1" and remains as it is. The (D') terminal of the counting circuit is a clear terminal, and when a "1" signal is applied to the (D') terminal, the contents of the counter are forced to zero, and at the same time, (
C' ) terminal also returns to the "0" state. In the present invention, the mind is in the logical state "1",
“0” and signal level high (“H”) and low (“L”)
will be explained below in relation to the following.

[Table] 84 is a comparison circuit whose input terminal is “1”
Then, only when the input terminal is "H", "1" is output to the output terminal. 85, 86, and 87 are matching circuits, each with an input terminal of "1" (the input terminal of 86 is "1").
H' is "1", and in 87, H" is "1" and below in the same order), and the other input terminals are "L"(I' is "H")
When ( I″ is “L”), the output terminal is “1” ( J′
“1”) is sent to Reference numeral 88 is a driver circuit, which supplies a driving power source of AC 100 V to the air valves 51 and 53 when the input terminal is "1". 89 is a driver circuit, and input terminal K'
When is "1", the drive power supply AC100V is supplied to the indicator light 54, and the indicator light is turned on. The operation will be explained using the configurations shown in FIGS. 1 and 2 described above. (1) In the case of normal operation Normally, the shutter 6 is set in an open state, and when the vibration trough 1 is vibrated, the fish 5 are pushed toward the weight roller 9. The spike drum 8 rotates at a speed of about 60 revolutions per minute, and by the cooperation of the weight roller 9 and the pin 8-1, about one fish is transferred to the tray 11 every second.
send to. In synchronization with the rotation of the spike drum 8, the rotary encoder 52 sends out an electric pulse when the pin 8-1 is almost directly above it. The fish 5-1 fed into the tray 11 is accelerated by the feather brush 12 and moves forward, blocking the light beam. Therefore, during normal operation, the rotary encoder 52 outputs one electric pulse.
When one electric pulse is sent out, one electric pulse is sent out from the light receiving sensor 14 after a certain amount of time has passed. Since the fish 5-1 is taken out from the tray 111 by the intermittent feeding means 108, 109, and 110, the light beam reaches the light receiving sensor 14 from the light projecting sensor 13 again. Therefore, the electrical output of the light receiving sensor 14 becomes "H" as one fish passes by.
→Changes from “L” to “H”. If the counters of the counting circuits 82 and 83 have been previously set to a value smaller than No or N'o, for example zero, then they maintain that value. The operation when the fish is clogged will be explained below. (2) In the case of fish clogging in the means of separate feeding of single fish,
As mentioned above, there are fish that live in the natural world, such as long and short fish, and fish with a large and small body width. Some fish are not fed and get stuck at the weight roller 9. If this is left unchecked, the equipment will be running dry, so it is necessary to immediately notify the operator of the blockage. When the weight roller 9 is filled with fish, no fish is fed to the tray 11, so the light beam is not blocked by the fish, and the output of the light receiving sensor 14 is "H".
It will remain as it is. Therefore, no electric pulse is applied to the B' terminal of the counting circuit 83, and no subtraction is performed. On the other hand, since the spike drum 8 rotates at a constant rotational speed, each time the spike drum 8 rotates once, an electric pulse from the rotary encoder 52 is applied to the A' terminal of the counting circuit 83 and added to the counter. Therefore, since the counting circuit 83 only performs addition without subtraction, the cumulative value in the counter will exceed the value N'o preset in the counting circuit 83 if the spike drum 8 continues to rotate. When N′o is exceeded, the counting circuit 83
Since the output terminal C' of is in the state of "1" and the electrical output of the light receiving sensor 14 remains "H", the indicator light 54 is turned on by the coincidence circuit 86 and the driver circuit 89, and the wait state is It is displayed that the roller 9 is clogged with fish. In the embodiments shown in FIGS. 1 and 2, an indicator light is displayed, but a circuit equivalent to the dry circuit 89 is placed side by side,
(1) Making a buzzer sound, or (2) Automatically cutting off and stopping the drive source (not shown) of the eccentric crank 3 of the vibration trough 1, or
(3) It goes without saying that this can be applied to automatically disconnecting and stopping the drive source (not shown) of the spike drum 8. The operations from when the weight roller 9 is filled with fish until the indicator light 54 turns on have been described above. Next, the operation of turning off the indicator lamp 54, that is, clearing the counting circuit 83, will be described. When the indicator light 54 lights up, the fish stuck in the weight roller 9 is removed and the fish is placed in the tray 1.
1, or the clogged fish is pushed by the following fish, changes its tilt, and is sent to tray 11 by pin 8-1, blocking the light beam, the matching circuit is activated. Since input terminal I' of 86 becomes "L", J' becomes "0" and indicator lamp 54 goes out. In addition, the input terminal H″ of the matching circuit 87 remains “1”, and the input terminal I″ is
As mentioned above, since the sensor output 14 is "L", the output J" of the coincidence circuit 87 becomes "1" and the counter contents of the counting circuit 83 are forced to zero. Therefore, the output terminal C of the counting circuit 83 ' becomes "0" and is cleared. (3) In the case of fish clogging in the intermittent feeding means When the weight roller 109 is clogged with fish, spikes are released from the fish separation feeding means consisting of the weight roller 9 and the spike drum 8. As the drum 8 feeds fish into the tray 11 every time it rotates, the fish accumulate in the tray 11 and even overflow from the tray 11.Therefore, fish enter the tray 11. It is necessary to block the light beam and remove the fish stored in the tray 11. If the weight roller 109 is clogged with fish, the clogged fish will continue to block the light beam, so the output of the light receiving sensor 14 will be "L". Therefore, no electric pulse enters the input terminal of the counting circuit 82, and no subtraction is performed by the counter of the counting circuit.On the other hand, since the spike drum 8 rotates at a constant number of revolutions, At the same time as the fish is fed into the tray 11 each time it rotates once, an electric pulse is applied from the rotary encoder 52 to the terminal of the counting circuit 82 and added by the counter.Therefore, the counting circuit 82 only performs addition without subtraction. If the spike drum 8 continues to rotate, the cumulative value in the counter will exceed the preset value No. state is maintained, and the output of the light receiving sensor 14 remains at "L", so the input terminal of the matching circuit 85 becomes "L" and the output terminal becomes "1".
Then, the air valves 51 and 53 operate via the driver circuit 88 to switch the flow direction of the high-pressure air. When the air valves 51 and 53 switch the flow direction of the high pressure air, the direction of the high pressure air flowing into the air cylinder 7 and the air cylinder 15 changes, and the shaft 7-1 of the air cylinder 7 contracts, causing the shutter 6 to block the passage of the fish. . At the same time, the shaft 15-1 of the air cylinder 5 is extended, and the tray 11 is rotated clockwise and held in a downward facing position. When tray 11 is placed downward, tray 11
The fish stored in the tray move along the slope of the tray 11 and are removed from the tray 11. As mentioned above, since the shutter 6 is closed, no new fish will enter the tray, and the tray 11 will be empty. When the tray 11 becomes empty, the light beam reaches the light receiving sensor 14 from the light projecting sensor 13, so that the output of the light receiving sensor 14 becomes "H". Therefore, the terminal of the matching circuit 85 is in the "1" state, but since the terminal becomes "H", the output terminal of the matching circuit 85 becomes "0". driver 8
8, since the input terminal becomes "0", the driver 88 switches the air valves 51 and 53 in the return direction, so the shutter 6 opens and the tray 11
returns to almost horizontal. By the way, the output terminal of the counting circuit 82 is still held at "1". Therefore, although the input terminal of the comparison circuit 84 is in the "1" state, since the terminal becomes "L", the output terminal becomes "1" and the counter of the counting circuit 82 is forced to zero and is cleared. (G) Effects of the Invention According to the present invention, it is possible to automatically detect a fish blockage, display the fish blockage, and automatically remove the fish blockage in a fish body image input device, so that the operation of the device can be reduced. This not only makes it possible to improve the performance of the device, but also facilitates the operation of the device, and at the same time contributes to labor saving of the device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the mechanism of a fish body image input device according to an embodiment of the present invention. FIG. 2 is a diagram showing a block diagram of the control circuit section. In Figure 1, 1 is a vibration trough, 5, 5-1
is a fish, 6 is a shutter, 7 is an air cylinder, 8 is a spike drum, 9 is a weight roller, 10 is a saucer, 11 is a tray, 13 is a light emitting sensor, 14 is a light receiving sensor, 15 is an air cylinder, 16 is a television camera , 17 is a strobe, 19 is a shower pipe,
51 and 53 are air valves, 52 is a rotary encoder, 108 is a spike drum, 109 is a weight roller, and 110 is a saucer.

Claims (1)

[Scope of Claims] 1. Separating means for separating fish one by one and supplying the fish to a fish imaging position, a fish imaging means for obtaining a fish image at the fish imaging position, and intermittently discharging the fish at the fish imaging position. a means for detecting the number of operations of a fish body passing through the fish body imaging position; a means for detecting the number of operations of the separation supply means; means for giving an instruction; and means for preventing the supply of fish to the fish imaging position when a blockage of the fish at the fish imaging position is detected based on the output of the passage detection means and the output of the operation number detection means. A fish body image input device comprising: means for tilting a conveyance path at the fish body imaging position to remove the fish from the fish body imaging position. 2. A patent claim characterized in that the distance between the passing detection means for detecting passage of the fish and the intermittent feeding means is set to be shorter than that of the shortest fish that is the object of image input. The fish body image input device according to scope 1.