JPH01308103A - Carrier identifier in carrying system - Google Patents

Abstract

PURPOSE:To enable individual identification of carrier, by providing a position for identifying the carrier on a speed/position detecting board arranged on the carrier. CONSTITUTION:Slit (a) for detecting the position of a carrier 1, slit (b) for detecting the number and speed of the carrier and slit (c) for reading/strobing the carrier number and detecting the carrier speed are made in a slit board 3. When a carrier 1 advances on a carrier carrying rail 2, the slit board 3 fixed to the carrier 1 blocks light of a sensor unit 4, and a carrier control signal generator 5 issues a speed/position signal and a carrier number to a controller 6.

Description

[Detailed Description of the Invention] "Field of Industrial Application" This invention relates to a linear motor (LIM) conveying device,
In particular, the present invention relates to a transport A-carriage identification device for identifying individual transport carriers.

"Prior Art" One type of system control in a conventional LrM transport device is speed feedback control. In this method, a slit plate is attached to a transport carrier, and speed/position sensors consisting of a light emitter and a light receiver are arranged on both sides of the slit plate. A slit plate attached to the conveyance carrier blocks the optical axis of the speed/position sensor, and the Nostem is controlled using pulse signals corresponding to the speed/position generated.

"Problems to be Solved by the Invention" By the way, in the conventional LIM transport device described above, no means for physically identifying individual transport carriers was particularly provided. For this reason, the operation of Nostem
If an abnormality occurs in step 2, it becomes very difficult to repair the nostem because the transport carrier cannot be identified. One possible solution to this problem is to put a barcode on each transport carrier and use a barcode reader to read each number for identification, but this method has the disadvantage of being extremely expensive.

This invention (J) was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a conveyance carrier identification device for a conveyance device that can instantly identify individual conveyance carriers, has a simple configuration, and is inexpensive. It is said that

"Means for Solving the Problem" This invention provides a transport carrier in which an object to be transported is stored, a carrier transport rail on which the transport carrier runs, and a transport carrier for detecting the speed and position of the transport carrier. A speed and position detection plate is installed on the carrier, and a speed and position detection plate is installed along the movement path of the speed and position detection plate, and the speed and position of the transport carrier is determined by reading the data of the speed and position detection plate. a speed/position sensor that generates a signal according to the speed/position sensor, a speed/position detection circuit that processes the signal generated by the speed/position sensor to detect the speed and position of the carrier, and a speed/position detection circuit that processes the signal generated by the speed/position sensor to detect the speed and position of the carrier. The conveyance apparatus is equipped with a control device that controls the travel of the conveyance carrier based on the output, and is characterized in that the speed/position detection plate is provided with a detection portion for identifying the conveyance carrier.

"Operation" According to the present invention, when the conveyance carrier provided with the speed/position detection plate passes near the speed/position sensor, the conveyance carrier is identified by a signal corresponding to the speed/position from the speed/position detection circuit. Since a signal corresponding to the carrier is generated, processing the signal makes it possible to identify individual carriers.

``Embodiment'' An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a LIM transport device to which a transport carrier identification device according to an embodiment of the present invention is applied. In this figure, 1 is a transport carrier and 2 is a carrier transport rail. The bottom surface of the carrier 1 is equipped with the secondary conductor of the linear motor and the wheel that is engaged with the carrier transport rail 2. Also, the carrier transport rail 2 is equipped with the primary coil of the linear motor. They are arranged at predetermined intervals, and by supplying a predetermined current to these secondary coils, the carrier carrier 1 runs on carrier conveyance rails 2''. 3 is a slit plate, as shown in FIG. As shown in FIG.
Slabs 1-(B phase) C for car number reading strobe and speed detection are respectively formed. 4 is a sensor unit formed in a U-shape, and as shown in FIG. 3, floodlights 6 to 8 and Floodlight 6-8
It is composed of light receivers 9 to II that receive the light. When the transport carrier I travels, the lint plate 3 attached to the transport carrier 1 passes between the projectors 6 to 8 and the light receivers 9 to 11, and blocks the light from the projectors 6 to 8. As a result, signals corresponding to the respective slits 1-a-c provided on the slit plate 3 are generated from the light receivers 9-11. As shown in FIG. 3, 5 is a carrier control signal generating device comprising a waveform shaping circuit 12 and a carrier car number generation circuit 13. In FIG. 3, the waveform shaping circuit I2 shapes the waveform of the signal generated from the sensor unit 4 to generate position signals Sa corresponding to the slits a"-c, respectively.
, an A-phase signal, and a B-phase signal Sc (see FIG. 4), and the carrier car number generation circuit 13 generates a signal for identifying the transport carrier 1 (see FIG. 5). In FIG. 5, 14 is a first gate that uses the position signal Sa of FIG. 4 as the first human power and the A phase signal sb as the second human power;
16 is a second gate that takes the position signal Sa as its first input and the I3 phase signal Sc as its second input; 16 is the first gate 14;
The output signal of the second gate 15 is latched by the rising edge of the output signal of the second gate 15 (7 stages in the figure).
Start/end bit signal (hereinafter referred to as the first S/E bit signal) S/E], car number bit)/signal DO~I) 4. Second start/end hit signal (
S/E2 (hereinafter referred to as a second S/E signal) is output. Reference numeral 17 denotes a focus exchange logic, into which the first S/E bi-soto signal S/El of the noft train star 16 and the car number hit signals DO to D4 are respectively input. When the output signal No-N4 is at the level of the first S/E bi-soto signal S/IΣ1 month of the shift register 16, the output signal No-N4 is an array (Do, Dl) of the car number pi-soto signal Do-D4.
, D2, D3, ■]4) is output as is, and the first S/
When the E-hi-soto signal S/E1 is at H level, the array from the lowest bi-soto to the highest 1st hit (DO1■) 1, D
2, D3, D4) are sequentially replaced from the 1st bit to the least significant bit array (D/l, D3, D2, DI, Do) and output. 18 uses the first S/E bit signal S/El of the amplifier star 16 as the first human power, and
An inverter 19 inputs the /E bit signal S/E2 as a second input and inputs the output of the exclusive knob ornate 18 manually. Reference numeral 6 denotes a control device that receives a signal from the carrier control signal generator 5 (by supplying a predetermined current to a primary coil provided on the carrier conveying rail 2, the conveying carrier 1 is controlled by the carrier conveying rail 2). The carrier sensor 7 generates a signal to detect the transport carrier 1.

In such a configuration, first, when the conveyance carrier I shown in FIG. block out the light. In response to this, a signal 5a=Sc shown in FIG. 4 is generated in the recarrier control signal generator 5. These signals S a=S
c is sent to the control device 6 and L as a speed/position signal.
The carrier car number generation circuit 13 shown in FIG. 5 is used for speed feedback control of the IM transport device.
is input. In FIG. 5, first, when the position signal Sa in FIG.
A phase signal Sc is output. The output of the first gate 14, that is, the A-phase signal sb, and the output of the second gate 15,
That is, since the B-phase signal Sc is input to the data input and clock inputs of the soft register 16, the A-phase signal Sb is latched in the soft register 16 at the rising edge of the B-phase signal Sc. Then, the first S/E bit signal S/El, the car number pit signal Do-D4, and the second S/E bit signal S/E2 are output from the shift register 16, respectively. Therefore, for example, in the case of the waveform shown in FIG. 4, the first S/E bit signal S/El in FIG.
After the level is detected, the output signals DO to D4 of the lowest to highest pits increase, H, L, L,
Moreover, since the second S/E hit signal S/E2 is detected as T-ruher, the output signals NO to N4 of the pit exchange logic I7 remain as Il, H,
L, L, L are output, and the car number of this transport carrier I can be specified as "car number 2."

Furthermore, in the above case, it is assumed that the transport carrier 1 in FIG. is detected as H level, the respective output signals DO to D4 of the third bit from the least significant bit are at the LSL, T, H, and L levels, and the second S/E hit is detected as H level. Signal S
/E2 is detected as L level, so this time the first S/E
According to the bit signal S/El, the output signals NO to N4 of the pit exchange logic 17 are arranged and output as LSH, LXL, and L, and the car number of this carrier l is also "2".
It can be identified as "car number".

Then, the carrier sensor 7 in FIG.
At the time when the controller 6 detects this, the control device 6 reads the car number output from the carrier car number generation circuit 13.

However, both the first S/E bit signal S/El and the second S/E bit signal S/E2 are at L level or
-■ If the level is detected, the output of 18 is L level, so the inverter 1
9 output becomes I (level) and car number identification abnormal signal U
N is output, it is detected that an abnormality has occurred in the car number identification of the transport carrier I, and even if the carrier sensor 7 detects the transport carrier I, the control device 6 does not output the signal from the carrier car number generation circuit 13. I can't read the car number.

In the following, an example saw using the slit plate 3 and the sensor uni-sol 1-4 to identify the transport carrier I is used to identify the transport carrier I.
By providing a section side in which magnets are arranged to generate signals similar to the A-phase signal Sb and B-phase signal Sc in FIG. The transport carrier 1 can be identified.

``Effects of the Invention'' As explained hereinafter, this invention has the advantage of having a detection part that can identify the conveyance carrier on the speed/position detection plate installed on the conveyance carrier. , it becomes possible to identify individual transport carriers, and even if an abnormality occurs, the system can be repaired immediately, and it can also be used to manage individual transport carriers for cargo movement.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a LIM transport system to which a transport carrier identification device according to an embodiment of the present invention is applied, Fig. 2 is a diagram showing the configuration of a slit plate in the embodiment, and Fig. 3 is a diagram showing the same implementation. FIG. 4 is a block diagram showing the configuration of the sensor unit) 4 and the carrier control signal generator 5 in the example.
A waveform diagram of the phase signal and the B-phase signal, and FIG. 5 is a circuit diagram showing the configuration of the carrier car number generation circuit 13. 1... Conveyance carrier, 2... Carrier conveyance rail, 3 Slit plate, 4 - Sensor unit, 5...
Carrier control signal generator, 6...control device.

Claims (1)

[Claims] A conveyance carrier in which an object to be conveyed is stored, a carrier conveyance rail on which the conveyance carrier runs, a speed/position detection plate provided on the conveyance carrier for detecting the speed and position of the conveyance carrier, and A speed/position sensor that is provided along the movement path of the speed/position detection plate and reads data from the speed/position detection plate and generates a signal according to the speed and position of the conveyance carrier; and the speed/position sensor. a speed/position detection circuit that processes signals generated by the transport carrier to detect the speed and position of the transport carrier; and a control device that controls traveling of the transport carrier based on the output of the speed/position detection circuit. A conveyance carrier identification device for a conveyance device, characterized in that the speed/position detection plate is provided with a detection portion for identifying the conveyance carrier.