JPS6217875Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a state change detection device used when inputting digital numerical data, etc. to an information processing device, and is capable of stable operation even when a group of input data undergoes rapid state changes, and has a circuit configuration. The present invention aims to provide a state change detection device that is as simple as possible.

When input information of a group of digital numerical data is taken into an information processing device, a detection device is provided separately from the information processing device to detect whether the input data is changing or not. Check that the condition is stable rather than
The predetermined signal processing method for latching into the memory of an information processing device for the first time is well known. A typical circuit example of such a state change detection device is shown in FIG. The figure shows an example where the input data is n-bit numerical data, where 1 to n are make contacts of detection relays (not shown) provided corresponding to the number of bits of the input data, and _A1 to _Ao are digital numerical data. As shown in the figure, these relay groups have respective auxiliary contacts of make contacts a ₁₀ - a ₁₁ - break contacts a ₁₂ and make contacts A _10o - a _11o - break contacts a _12o . These are so-called wire spring relays with MBB contacts, and B ₁ to _{B o} are main relay groups for detecting digital numerical data. Contact b ₁ −b ₂ ,b
_10o - b _11o , respectively. T _A and T _B are state change detection relays, and these relays have make contacts t _a1 - t _a2 and make contacts t _b1 - as shown in the figure.
It is called a wire spring relay with a so-called MBB contact, which has a t _b2 -break contact t _b3 corresponding to each relay. C ₁ -R ₁ and C ₂ -R ₂ are time constant circuits for appropriately adjusting the state change detection time, and D ₁ -D ₂ and D _o1 -D _o2 are diode groups, respectively, (+) - (- ) indicates the positive and negative bus lines of the control power supply.

The operation of the conventional device configured as described above is explained in the second section.
To explain in detail with reference to the time chart in Fig.
Assuming that n-bit digital numerical data is input to the diagramming device and the first bit is the first bit, detection relay _A1 is activated as shown in Figure 2 through make contact 1 based on the 1st bit numerical data shown in Figure 2A. It is excited as shown in (b), and its make contacts _a10 and _a11 are respectively closed. When the latter make contact a ₁₁ closes, the relay T _A moves to the position D in Figure 2 through the path of positive electrode bus (+) → make contact a ₁₁ → break contact a ₁₂ → relay T _A → negative electrode bus (-). It is energized as shown and outputs a state change detection signal indicating, for example, "data changing" to an information processing device (not shown) through its make contact T _a2 . In parallel with this operation, the former make contact t _a1 switches to the contact t _b2 side,
Since the opposing state change detection relay T _B is already in the ON state as is clear from the illustrated circuit, current flows through its make contact t _b2 in the path of contact t _a1 → contact t _b2 → relay T _A , and relay T _A is self-maintained. The period during which relay T _A continues to be energized,
Since the excitation of the other relay T _B is released on the condition that the make contact t _a1 is switched, the energy accumulated in the excitation coil of the relevant relay is released through the time constant circuit of C ₂ −R ₂ and the relay T _B When returns as shown in Figure 2 E, the contact t _b1 which has been closed until now opens, and the other contact t _b3 closes, positive bus bar (+) → contact t _b3 → contact a ₁₀ → diode D ₁ →
Relay B ₁ is energized through the path of relay B ₁ ,
As shown in FIG. 2C, after waiting for relay _B1 to be energized, digital numerical data is outputted to an information processing device (not shown) using the contact output of make contact _B2 . In parallel with this operation, on the condition that the make contact t _b2 of relay T _B is opened, the relay T _A that has been in the energized state is de-energized, and the relay T _A returns to output power to the information processing device. The "data changing" signal becomes "0", and after that, the numerical data input through the contact _b2 is latched into the memory of the information processing device (not shown) as data indicating the first bit. In this state, when the first bit of numerical data disappears and the second bit of data begins to be input as shown in Figure 2A, the relay is activated on the condition that make contact 1 has fallen off.
A ₁ returns and T _A returns through the path of relay T A through contact a ₁₁ → a ₁₂ → relay T _A of the relevant relay A ₁ that has memory ability.
is energized, and relay _TB , which is energized along the path from contact t _a1 to relay _TB , is deenergized and begins to return. When the relay T _B returns in this way, the relay T _A , which is self-held in the path of contact t _a1 → contact t _b2 → relay T _A , returns under the condition that contact t _b2 falls off, and the contact of the relay T _A On the condition that t _a1 has been switched, relay T _B is energized again to return to the initial state, and processing of the input second bit numerical data is started.

As mentioned above, in the conventional device shown in Fig. 1, a wire spring relay with a special contact MBB is used to detect a predetermined state change. Since the detection signal during the state change is set and created by each time constant circuit of _C1 - _R1 and _C2 - _R2 , a stable detection time cannot be obtained. Second, since the capacitor of the time constant circuit that sets the time during state change is charged through the relay contacts,
The higher the frequency of state changes in the numerical data, the more intense the wear of the contacts becomes, shortening the lifespan of the relay and increasing the complexity of maintenance. Thirdly, since a special relay called a wire spring relay is used, it is not only very expensive, but also the disadvantage mentioned in item 2 above makes the device itself very uneconomical.

The present invention has been devised in view of this point, and in particular, the present invention is characterized in that a general relay is applied, and will be described in detail below based on the embodiment shown in FIG. 3.

In the embodiment shown in FIG. 3, the same parts as in _FIG . E ₁₃ and break contact E ₁₂ respectively. F is a numerical data output relay using a general relay, and this relay has make contacts F ₁₁ to F ₁₄ , respectively, as shown. _D11〜
D ₁₃ are each diodes and R ₁ is a resistance.
The same circuit configuration as above is also applied to other bit detections covered by broken lines, and 2 is a data change signal output circuit composed of make contacts E ₁₃ to E _13o , and 3 is make contact F ₁₄ ~
This figure shows a digital numerical data output circuit composed of _F14o .

The operation of this embodiment configured as described above is explained in the fourth section.
To explain in detail with reference to the time chart in the figure,
When the first bit of digital numerical data is input as shown in Fig. 4A, the make contact 1 of the detection relay (not shown) → diode D ₁₂ → relay E → resistor
A current flows through the path from R ₁ to the negative bus (-), and the state change detection relay E begins to be energized as shown at point t ₀ in FIG. 4B. When relay E is turned ON at time t ₁ point in Figure 4, its make contacts E ₁₁ -E ₁₃ are closed and break contact E ₁₂ is opened, and as make contact E ₁₁ is closed, the positive electrode bus (+) → make contact 1. -> Make contact E ₁₁ -> Relay F -> Negative bus (-), data output relay F begins to be energized as shown at point _t1 in Fig. 4C. When relay F is energized in this way and turns ON at point _t2 in Figure 4, each of its make contacts F ₁₁ to F ₁₃ -F _13o is closed, and positive bus bar (+) → make contact 1 → diode D ₁₃ → At the same time, the data output relay F is self-held through the path from make contact F ₁₃ to relay F, and at the same time, power supply voltage is applied to the input side of state change detection relay E through the path from positive bus (+) to make contact F ₁₂ . (Diode D ₁₂ is reverse biased and turns OFF), and the power supply voltage is applied to the output side of state change detection relay E through the path of positive bus (+) → make contact 1 → diode D ₁₁ → make contact F ₁₁ . Since the values of the voltages applied to the input end and the output end are substantially equal in phase, the voltage between the terminals of the relay E becomes zero, and the state change detection relay E becomes non-energized and turns OFF. This OFF point is shown at point _t3 in Figure 4 B. When relay E is OFF, its make contacts E ₁₁ - E ₁₃ are separated and "data is changing".
The signal becomes "0", and the first bit of numerical data input through the make contact _F14 of the data output circuit 3 is latched in the memory of the information processing device (not shown), and the break contact _E12 of the relay E is closed. Therefore, positive electrode bus bar (+) → break contact E ₁₂
→ Make contact E ₁₃ → Through the path of relay F, the numerical data output relay F continues to maintain its self-holding state and continues to send out the 1st bit data through the make contact F ₁₄ of the output circuit 3. As is clear from the above operation explanation, the time t ₀ to t ₃ required for the state change detection relay E to start excitation and return is defined as the time during which data is changing in this application, and a "data changing" signal is created. However, the period of actual data change is shown between t ₁ and _{t 2} in FIG. Now the fourth
Figure 4 shows the data validity period after point _t3 in the figure.
When the 1st bit data input signal disappears as shown at point t ₄ , make contact 1 in Figure 3 falls off, so the loop of make contact 1 → diode D ₁₁ → make contact F ₁₁ , which has been in a closed state, closes. is opened, and as a result, relay E begins to be energized through the path of positive bus (+) → make contact F ₁₂ → relay E → resistor R ₁ → negative bus (-), and the relay is activated at point _t5 in Figure 4. When E is completely turned ON, a signal meaning "data changing" is outputted again to the information processing device (not shown) through the make contact E ₁₃ of the data changing signal output circuit 2, and the latching of data in the memory is stopped. . In parallel with this operation, break contact _E12 of relay E is opened, so that the self-holding loop of relay F is opened and data output relay F is deenergized. When relay F turns off at point _t6 in Figure 4, its make contacts _F11 to _F14 separate, and as make contact _F12 falls off, relay E is de-energized again and at point _t7 in Figure 4. At this point, relay E turns OFF and returns to the initial state, and the same operation as above is input sequentially.The 2nd bit data, the 3rd bit data, and so on are processed as the nth bit data. Ru.

As described above, in the present invention, the state change detection device is configured simply with a general electromagnetic relay, a diode, and a resistor without using any wire spring relay with MBB contacts. It has various effects as shown below.

Rather than creating a state change signal using a time constant circuit, the signal creation time is the time from energizing the state change detection relay to returning to operation, so very stable operation can be achieved.

Since there is no method of charging the capacitor through the contacts of the relay, which is the case with conventional devices, it not only extends the lifespan of the relay and eliminates the complexity of maintenance, but also eliminates the possibility of changes in condition. Completely stable operation is possible even in the case of heavily multiplexed fields.

Since the device is constituted by three parts: an electromagnetic relay with a general structure, a diode, and a resistor, the circuit configuration can be further simplified and a very economical device can be realized.

[Brief explanation of the drawing]

FIG. 1 is a specific circuit diagram showing a conventional state change detection device, FIG. 2 is a time chart showing its operation, and FIG. 3 is a specific circuit diagram showing a state change detection device according to the present invention. , FIG. 4 is a time chart showing the operation. E... Relay for detecting state change, F... Relay for outputting digital numerical data, E ₁₁ -E ₁₃ - _{E 13o} and F ₁₁ - F ₁₄ - F _14o ... Make contact, E ₁₂ ... Break contact, D ₁₁ ~ _D13 ...Diode, _R1 ...Resistor, 2...Data changing signal output circuit, 3...Digital numerical data output circuit.

Claims (1)

[Claims for Utility Model Registration] (1) A first relay group for detecting each bit of input digital numerical data of multiple bits, and detecting a state change of the digital numerical data using the operational output of this relay. and a state change detection relay that outputs a state change signal over a predetermined period of time, and is energized by the operation output of this relay, and the state change detection relay is energized on the condition that it is turned on. Numerical data that, when released, makes the potentials of the numerical data output relay that outputs the digital numerical data and the input terminal and output terminal of the state change detection relay the same potential on the condition that this relay is activated. A make contact loop of the output relay, a break contact of the numerical data output relay, and a make contact of the numerical data output relay, which de-energizes the numerical data output relay on the condition that the numerical data output relay is activated. and an information processing device that inputs a state change signal and digital numerical data and latches the digital numerical data in a memory on the condition that the state change signal disappears. A state change detection device for digital numerical data. (2) The state change detection device for digital numerical data according to claim 1, wherein the state change detection relay and the numerical data output relay are electromagnetic relays having a general structure.