JPS5831475A - Machine body number code read system - Google Patents

Abstract

PURPOSE:To easily discriminate a machine body number, by arranging black spots in the form of a matrix on the outside of a body case, and reading them optically. CONSTITUTION:On a white top surface plate 13 of a measuring machine body 10, black spots are provided in the form of a matrix. As for the black spots, a circular dot-like through-hole 15 is provided on a necessary spot of the top surface plate 13 and is closed by a black sheet 17. For instance, in case of a matrix consisting of 5 lines and 6 rows, a start code and a synchronizing mark are defined by the first row R1 and the fifth line L5, respectively, the matrix is formed by the second row R2- the sixth row R6, and the first line L1- the fourth line L4, digits 10<0>-10<4> are displayed by R2-R6, and ''1'' and ''0'' of a binary code are displayed by L1-L4. In case of the figure, 4X10<4>, 3X10<3>, 2X10<2>, 1X10<1>, 1X10<0>=43,211 is displayed. In this way, the machine body number can be read exactly by moving the photodetector and the light emitting device in the direction as indicated with an arrow (a), a starting them by R1, synchronizing them by L5, and detecting whether a reflection exists or not. This system is applied to a dosage meter and is suitable for processing an exposed radiation quantity of each person.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device number code reading method that defines a number for, for example, a dosimeter body and reads it.

In managing the 911@ dose of radiation, it is desirable that the relationship between a specific individual and the 1-position needle be clear. If this relationship is unclear, it becomes unclear who the read exposure dose data belongs to, and there is a danger that other people's exposure doses may be integrated. For this reason, it is necessary that the relationship between the Okihin and the individual be constantly clarified.

An object of the present invention is to meet the above-mentioned demands, and to provide an aircraft number code reading system that can also read the number of the main body when reading the dose rate, for example.

In the present invention, the above-mentioned object is achieved by attaching a coded mark representing the machine number in the form of a matrix to the case of the main body, and reading the mark optically.

The present invention will be described in detail below based on the drawings.

FIG. 1 shows a dosimeter body to which the present invention is applied.

Here, the outer casing of the 1-dose needle body 10 is felt using a metal plate.

For the white top plate 13, consider a matrix of 5 rows and columns.
Start code in the 1st column R/, synchronization mark in the jth row Lj, ki row L to da row L, and the co column Rco to the 4th PJ.
R6 and machine code are defined by each matrix element. Corresponding to these defined matrix elements, as shown in FIG. 2, a circular dot-shaped through hole /S is provided in the top plate 13, and the through hole /3 is closed with, for example, a black sheet) /7. Let it be black dot part 2 (mark).

Now, if the aircraft number is ゛da3koll'', and each digit of this number is represented by a BGD code, the matrix, tux element (Rλ, L40゜ (RJ, L reference), (R*
, L3), (Rt, Lp), (
Rt.

A through hole is provided at a position corresponding to each of L3) and (R4, L) to correspond to the logic 111. 9, BOD code II in each of the 1st line L/~Da line L#
J +'', “4A”, @ko”, “l” 1 second row R2
~tth column R4tD soresohteto0. to”,
to2.105. Represents to'.

Figure 3 shows the configuration for reading the aircraft number code.

A fixed light emitting/receiving part PD installed in the reading part RED.
The main body lθ is advanced in the direction a at the lower part of D.

The emitted light L1 from the light emitting/receiving unit PDD is transmitted to the top plate 1 of the main body lθ.
3, and 1 receives the reflected light Lrt. Emitted light L
1 and reflected light are passed through an optical fiber manufactured by Lr. Since light is absorbed in the black spot portion on the top plate /3, there is no light reflection and the reflected light Lr is not received.

Light emitter/receiver PD of the sunspot area and the light emitter/receiver PDD that detects it
The positional relationship of PDj is shown in FIG. In other words, each of the first row L/~jth row, t is connected to the light emitter/receiver PD/~PD
Check with j. Emitter/receiver PD/-PDFO row and PDj
Melt, shift position, "t", 1 da.

After detecting the code ``CollltII/'', a synchronization mark for reading timing is detected.

FIG. 5 shows a specific example of the reading section RED. Here, the light receiving state in each of the light emitters and receivers PD/-PDj is converted into an electric signal DS/~D by a photoelectric converter CDI-ODj.
Sj K is converted and supplied to one input terminal of each of Nandogame) NG/-Has. Game) NG/-
The measurement signal IN is supplied to the other input terminal of N(,!).The signal BOI-BOf for each bit of the number code generated from NG/-NG4I is input to each j-bit shift register SR/-5RII. Supplied to input terminal IN.

The synchronizing signal syc obtained from the gate NGj is supplied to the monostable multivibrator MM to generate a single-width shift clock pulse SQL, and the three shift registers SR/~
8R1's respective clock input terminal OLK K is supplied. Bit QA- of shift register SR/~S'RIl
Q, are set as a set for each shift register and are connected to logic circuits LG/~L for each bit via the pass line BUS.
Supply to Gj. Counter CNT is activated by measurement signal IN and counts shift clock pulses 80L;
A read signal R'D is generated after a predetermined time has elapsed after counting t pulses. The reset signal RS is the counter GM? and shift register SR/~SRI K.

Each signal in FIG. 5 is shown in FIGS. 6(A) to (6).

Now, as shown in FIG. 6 (2), a measurement signal of 8N, which becomes high level at the start of the reading operation, is supplied to the dosimeter main body 10.
Proceed in direction a. The photoelectric converters CDl to CDj are
When a black spot in the corresponding row is detected (no detection of reflected light Lr), signal 'D takes a high logic level @1m.
Generate S/-DSj. Therefore, code i BO/ which becomes low logic level °O'' only when one point is detected.
-BCd and the synchronization signal 8YO (see Figure C) are obtained from the Nantes gate NG/-NGj. In addition,
Here, only the code signal BOda is shown in FIG. According to the shift clock pulse 5 (3L- (see Fig. 6 (O)) K generated from the multivibrator MM, each time a pulse is generated, the shift register □star SR/-SR- registers the code signal BO/-BOj, respectively. The logic state is transmitted sequentially from bit QA to Q8.

The respective logic states of bits QA4 to QD4 of shift register 5R4I are shown in Figure 6) to (HJK). Therefore,
Bits QIC4-Q of shift register 5RII after the th shift clock pulse 80L, Vi@
/″.

11", @0", 'l'", '"O". This is
It corresponds to the information of Hiroshi No. 1, which encodes the aircraft number. Similarly, the pitch Q? of shift register SR/? ! 1
~QA1 are all @O”, bit Q!c2A/QA2 of shift register SRλ is @6 #, 11 o 1
1, @6”.

@O11, @/#1 Bit Qx of shift register SRJ
h ” QAB is II Oml, II 01+'
, @ / 11 ,. 11/”.

@O” respectively. Digit *Signal ID/～ID
By supplying j to the logic circuit LG/~LGj K,
lOo, 10', 10'', 105.' 10
You can arbitrarily read out the numerical value of the ' digit. After performing necessary processing such as reading the machine number reading unit and the dose rate, a reset signal RAT is supplied to reset the counter ON and the shift registers SR/-SR to the initial state.

Note that the measurement signal 811 is returned to a low level at the same time as the read signal RD light is generated.

In this way, if each individual's exposure dose data is processed by reading the body number along with the dose rate, it is extremely preferable in terms of management because it will not be erroneously integrated as someone else's data.

As described in detail above, according to the present invention, it is possible to provide an aircraft number code reading method that can clearly maintain the relationship between, for example, a dosimeter and an individual.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the dosimeter main body to which the present invention is applied, Fig. 2 is a cross-sectional explanatory view of the top plate, Fig. 3 is a diagram showing the positional relationship between the dosimeter main body and the reading section. FIG. 5 is a block diagram showing an example of the reading section, and FIG. 6 is a timing diagram for explaining FIG. 3. 10...Dosimeter body, 13 ...Top plate, RED...
・Reading section, PDD...light emitting/receiving section, CD/-ODj・
...Photoelectric converter. MM・-*Stable multivibrator, OM? ... Kara/ri. Figure 1 Figure 2

Claims (1)

[Claims] An aircraft number code reading system characterized in that a coded mark representing the aircraft number in the form of a matrix is attached to the case of the main body, and the mark is optically read.