JPS6256026A - Identification/location system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention includes a plurality of devices for transmitting electronic signals on the transmission side 3, and includes a composite structure coil that also functions as a transmitter and a receiver.
r-transmitter/receiver) inside the sensor (detector) to l+I? It relates to an identification/identification system.

[Object and structure of the invention]

An object of the present invention is to provide a coil having a structure for both directional transmission and reception, but without coupling between the transmitting coil and the receiving coil. In this method, a coil with a structure that serves as a transmitter and a receiver is wound around a single core with magnetic poles turned in the same direction, and the coil part is connected between the transmitter coil and the receiver coil. This is achieved by wrapping the magnetic pole around the magnetic pole such that the magnetic field is essentially zero. In one particularly advantageous embodiment, the receiving coil and the transmitting coil of the transponder are wound around the same core, with the axes of the two coils being substantially perpendicular to each other. . The core may be U-shaped or loop-shaped, or may be arc-shaped. Preferably, the fur is constituted by two ferrite rods intermediately bonded to each other using a magnetically conductive material.

【Example】

In the following, the invention will be explained in more detail with reference to the attached drawings. The present invention identifies and identifies individual parts or finished metal structures.
It should be used for identification. For example, in the case of a large manufacturing machine, it is necessary to transport several different machine tools and tools, such as turning machines and cutting equipment, but only the relevant machining tools must be identified by #L. There must be. It would be interesting to provide a rl for attaching a transponder to the overhanging tool and input information regarding wear (service life) into the transponder. It has been found that since some type of shielding occurs, a signal below a certain frequency is required. In one specific embodiment, the cutoff frequency is approximately 80 kHz, with operation at 62 kHz selected. The transmitter coil is wound around a U-shaped core with the 1i1 pole direction facing toward the front (see FIG. 1). As a result, radiation with a certain special directionality is obtained. The radiated signal is received by coil L26 of the tuned circuit. The frequency of the received signal is transmitted to a circuit specially designed for this purpose (DAT^), which divides it into two frequencies, and then to a transformer (M). This specially designed circuit is coded (
Manchester Code-Mancbes-ter-ao
de), and the transmitted code is transmitted to the modulator (M). The thus modulated signal is transmitted (:1
A tuned circuit (L27,
C27). The transponder coils are substantially orthogonal to each other;
Preferably they may be wrapped around the same core (see Figure 8). The advantage of splitting the frequency into two is that the signal transmitted by the transponder is not disturbed by the harmonics of the first signal. The receiving coil consists of a coil 30 wrapped around the magnetic pole of the first core. The received signal is transmitted to an amplifier and filter, and then to a detector. The detector should be synchronized to the transmitted signal after the frequency of the signal has been split in two. As mentioned above, the so-called Manchester code is used. This signal consists of 3 synchronization bits, 16 information bits and 1 parity check bit. In Figure 2, 62.5
An oscillator is shown transmitting a signal of kllz and a signal of 31.25llz. The 62.5 kHz oscillator signal is introduced at C5 and then symmetrical, double differential amplifiers T1, T2,
The transmitter transmits the signal via a tuned output stage 143, C16, which is connected to pulse stages T7, T8. Modulation may preferably be performed in IC3 in the oscillator. - The transponder is connected to a tuned receiver circuit L26.02.
6. Consists of a certain number of diodes, a certain number of smoothing capacitors and a specially designed circuit 27. About 3v!
! ! A current voltage is applied to the voltage path 27. When the clock pulse is applied at C, output terminal No. 3 outputs the output terminal DATAI.
It will be sent here. This output signal is formed by a code of 100 pits, which is successively divided into five blocks of 20 bits each. Each block of 20 bits consists of 16 data bits, 1 parity bit, and 3 parity bits.
Consists of synchronous focus. 43 No. 2'' is transmitted to the transmitting coil 1427, and the frequency is divided into two by a specially designed CMSO circuit, resulting in 31.25
A signal with a frequency of kllz will be transmitted. The transmitted signal is received by the receiver in the receiver 7) (see FIG. 5). The signal is amplified in receiver 3, and after amplification and filtering, is transmitted to amplifier ICI2, which increases the signal level to an appropriate value. Data and clock pulses are introduced into the control logic shown in Figure 6. The data is derived from C35 in Figure 5, and the exclusive OR game i.8G (I, IC7 (in 8) Create and provide original data from I.Lance Bonder.l4C164 and I.
Each BP24510 is a circuit for decoding synchronous banotos on a synchronous pulse decoding (decoding/decoding) circuit forming a decoding (deciphering/post-code) data circuit. The reason for dividing it into two circuits is that the synchronization pulse is transmitted (
: 1.5 times the frequency, while the other pulses follow the transmit frequency. The synchronized puff b'' is supplied to the μm pump 1j Saisoner 8748.7 This μm puff ml
7. Sosa (yo, receive the synchronization (I: number) (Q (.) and receive the interruption/interruption during the period. Counter 4022
is set at the same time, and the amount (8) is counted, and during the counting of these 8 pans and 1 bow ξ, 8 data are stored in the shift register IC8 (at terminal 8).
Be ζ encoded. This color 1.・If the lower wing is 8, shift 1. The disk IC 8 transmits the bulk signal to the cut O+', i' child 8748 for the encoder pit. That is, every 8 bits) This one pano! , transmit the message-1-
73, each time an operation like (& + followed by another 1y) of one synchronization pulse occurs, 16 bits I will be digitized. This data is stored in a block of 16 bits 111 parity check bits and 3
It consists of two synchronization bits. Two shavings No. 43 and 2
After the x8 bit is introduced, a new same M signal is sent and the whole procedure is repeated. Although the five blocks are sent together, differences in synchronization signals occur in this case. One pulse is 1 star at the highest level
- After that, it drops to a lower level. Such a synchronization pulse is decoded and sent to terminal 1 of the μm processor.
3. At this stage it is only a matter of output (at the display or terminals 14 and 15).

[Brief explanation of drawings]

FIG. 1 is a block diagram of an identification and identification system according to the present invention. FIG. 2 shows the oscillator wiring. FIG. 3 is a wiring diagram of the transmitter. FIG. 4 is a wiring diagram of the transponder. FIG. 5 is a wiring diagram of the receiver 4a. FIG. 6 is a wiring diagram of the control logic connected to the receiver 4M'JJ. FIG. 7 shows a U-shaped coil that serves both as a transmitter and a receiver. FIG. 8 shows the transmitting coil and receiving coil in such a transponder.

Claims (1)

[Claims] 1) A transponder (trans-ponder-transmitter-receiver), which includes a plurality of devices for transmitting electronic signals on the transmitting side and includes a composite structure coil that serves both as transmitting and receiving functions.
In an identification/identification system consisting of telecommunications equipment installed inside a sensor (detector), a composite structure coil that serves as both transmitter and receiver is wound around a single core with magnetic poles turned in the same direction. An identification and identification system characterized in that the receiving coil is wound around the magnetic pole such that coupling between the transmitting coil and the receiving coil is substantially zero. 2) Identification and identification system according to claim 1, characterized in that the core is substantially U-shaped or loop-shaped. 3) The identification/identification system according to claim 1, wherein the core is arcuate. 4) Identification and identification system according to claim 1, characterized in that the core is constituted by two ferrite rods intermediately connected to each other using a magnetically conductive material. 5) Claim 1, characterized in that the transponder consists of a receiving coil and a transmitting coil, and these coils are wound around the same core so that the axes of the coils are perpendicular and orthogonal to each other. An identification/identification system according to any one of paragraphs 1 to 4.