JPS59176892A - Analog data collection 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 (a) Technical Field of the Invention The present invention relates to an analog data collection method for collecting analog data from sensors.

(b) Conventional technology A pulse distribution method is adopted as a method in which a plurality of detection sections including a point sensor and an A/D converter are provided, and data from these detection sections is sequentially collected. This conventional method will be explained using figures.

Figure 1 is an explanatory diagram of the conventional system, l is a pulse distributor,
2 is a processing device, 3 is a processing section, 4 is a pulse generation section, Al
t At t As y An is analog data, D
llDa t DB , pH is digital data,
P is the clock pulse, R+ Ptt Pss Pn is the distribution pulse, Qly C2.

Qs t Q n FiA / D −' 7 barter,
S+ r S2 + Sst Sn is seta; T is period 1. a, b, and C1Z are contacts.

FIG. 41(a) is a block diagram of the conventional system. The pulse distributor 1 distributes the clock pulse P (period 2 T'$) from the pulse generator 4 to each A/D converter 2 (Q, to Fig. 1(b) is a time chart showing the time relationship between the distribution pulses P, -Pn, and the valley distribution pulse (Pn).
i to Pn) are distributed every second. Therefore, the data collection speed from each A/D converter (Q+□n) is controlled by the period T of the clock pulse P of the processing device 2. In such a system, in order to further improve the data collection speed, it is sufficient to shorten the period of the crotter pulse P, but since this period is determined by the processing device t2, it is not possible to improve the data collection speed easily. There were no drawbacks.

(c) Object of the Invention The present invention has been made to solve the above-mentioned drawbacks, and its object is to provide an analog data collection method that can completely improve data collection efficiency.

(d) Structure of the Invention The present invention includes N production units in which a sensor and an A/D converter are connected, and a processing device that generates a clock pulse with a period of time T. In a system that collects analog data from a sensor by supplying pulses to an A/D transformer, a delay intermediate stage (N-1) is provided to delay the clocked pulse k by a time equal to T/N, and A/
The clock pulse is supplied to the first A/D converter among the D converters, and the clock pulse is supplied to each A/D converter other than the first A/D converter for a time period T/N. This is an analog data collection method that waits to collect analog data from the 611 and 611 centimeters by supplying clock pulses with a delay.

(e) Practical Example of the Invention FIG. 2 is a block diagram and a time chart explaining one embodiment of the invention, where h L 14 + 14 + 14 is a delay circuit Pat Pt-Ps, Pn is a delayed clock pulse, t is the delay time, and other symbols are the same as in FIG. As shown in Figure 2(a), A/D
The converter Q is supplied with a clock pulse P from the pulse generator 4, and the second A/D converter is supplied with a clock pulse P2 delayed by a time t.
Similarly, A/1) converter (D3 to Dn) of 37th and above
are supplied with clock pulses (P3 to Pn) f delayed by a time of 111, respectively. FIG. 2(b) is a time chart showing the above time relationship t, and time 1ijj.
N (clock pulses PI% and delayed clock pulses P2 to Pt)
n) is supplied to each A/D converter (Q, -Qn), so that the analog datums 1 to An'liH from the valley sensors S, -Sn can be collected.

(f) Effect of @Akira As described above, the present invention allows analog data to be collected at high speed even in a system where the period of the sampling pulse for data collection is regulated by the period of the clock pulse of the processing device. It has possible advantages.

[Brief explanation of the drawing]

Figure 1 is a block diagram and time chart for explaining a conventional system, and Figure 2 is a block diagram and time chart for explaining an embodiment of the present invention. The symbols used in the figures are as follows. 1, if'i pulse distributor; 2, a processing device; and 3, a processing section. 4 is the pulse generating section IA1 ynt As s An is analog data, and store t Di + Ds p Dn is digital data. LL, 14, Ls are delay circuits, P is a clock pulse. P1+ P2'l Ps r P n is distribution pulse +
Q+ + Qt, Qs + Q n is A/D: l inverter + S+ l St t sn l Sn is sensor. T is period, a, b, e, z are great points HPH+ P21 P
a +Pn is delayed clock I<pulse, t is 0 indicating IUI at the time of delay

Claims (1)

[Claims] It has N detection units in which the sensor and the A/D converter are connected, and a processing device that emits a clock pulse with a period of time T, and supplies the clock pulse to the A/D converter. Accordingly, in the system for collecting analog data from the sensor, a delay means (N-1) for delaying the clock pulse by a time T/N is fixedly provided, and one of the six A/D converters in front is supplying the clock pulse to a first A/D converter;
17' for valley A/D converters other than the first A/D converter.
An analog data collection method that collects analog data from the L Mu sensor by providing clock pulses that are delayed by N times.