JPH08172681A - Domino type data collector - Google Patents

Abstract

PURPOSE: To save the number of signal lines in a small number and to easily perform installing work by releasing a gate means one by one in sequence of connection of a sensor device based on a collection signal and collecting detection data from a corresponding sensor device. CONSTITUTION: When a center device turns on the collection signal via a collection signal line 13, data collection is started from a first sensor device. The collection signal from the center device is sent to a collection signal timing circuit 25 via a receive circuit 21, and the circuit 25 generates a RED signal when the collection signal continues to be turned on for fixed time, and sends a DATA-READ1 signal to a data gate circuit 27, and a confirmation-RED signal to a confirmation signal data circuit 29. Accordingly, the circuit 27 sends out data D1-D4 as the detection data of the device to a data bus 33 via a drive circuit 30. The circuit 25 sets an F/F 26 when the collection signal is turned off, then, the collection signal is transmitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data collecting device including a sensor device provided in each information source and a central device for collecting information from these.

[0002]

2. Description of the Related Art Conventionally, for example, in a data collecting device that collects window opening / closing information in a building management system, event information of a pachinko machine in an amusement store, etc. 9 has the structure shown in FIG. This sensor device is connected to a central device (not shown) for collecting data via an address bus 67 (4-bit parallel transmission of A1 to A4) and a data bus 69 (4-bit parallel transmission of D1 to D4). Has been done.

The sensor device receives an address signal instructed from the central device via the address bus 67 in the sheave circuit 61, and the address and its own address set by the internal address setting switch (SW) 64 are set. The address comparison circuit 63 compares the coincidence. When the designated address matches with its own address, it is determined that the transmission instruction is given to the sensor device, and the detection data (D1 to D
4) 68 is output from the data gate circuit 65, the output is adjusted by the drive circuit 66 and sent to the data bus 69,
It is to be sent to the central unit.

[0004]

By the way, in the above-mentioned conventional data collecting apparatus, when address selection is performed,
Depending on the number of bits of the address (in the above example, 4 of A1 to A4
Bit) The number of addresses that can be specified on the address bus 67,
That is, the number of sensor devices is limited. Therefore, when the number of sensor devices increases, the number of bits of the address increases, and it is necessary to increase the number of transmission lines forming the address bus 67. Therefore, the number of cable cores of the address bus 67 increases, while the size of the receive circuit 61 and the drive circuit 62 that current-drives the address bus 67 increase, which increases the size of the sensor device and increases the cost. Further, as the number of transmission lines handled by the receive circuit 61 and the drive circuit 62 increases, the current consumption increases here, so that the supply capacity of the DC power supply (power supply circuit 70 etc.) to the sensor device by the cable also increases. There are many problems such as the need for such measures.

On the other hand, there is a serial transmission system in which data is transmitted through a single transmission path without using the address bus 67. In the case of a general serial transmission system, serial data is converted into parallel data while synchronizing. Since special processing such as conversion is required, it is necessary to control the sensor device by mounting a CPU (central processing unit) or the like. For this reason, the cost increases, and the current consumption also increases, making it difficult to supply DC power through a cable, which necessitates the use of an AC power supply.

The present invention was devised in view of the present situation, and its purpose is to collect scattered information such as window opening / closing information in a building management system and pachinko machine event information in an amusement store. It is an object of the present invention to provide a data collecting device which is simple in construction and installation work and economical in the data collecting device.

[0007]

In order to achieve the above object, the data collecting apparatus according to the first invention is an embodiment of FIG.
As shown in, a plurality of sensor devices that detect generated data and send it, a central device that collects data from these sensor devices, and a sensor device that extends from this central device and is connected by relaying each sensor device. The technical premise is a data collection device having a collection signal line and a transmission line for transmitting the detection data in each sensor device to the central device, and the sensor device is output from the central device and relays the sensor device. Collecting signal gate means for opening the flow of the collecting signal sent to the subsequent sensor device based on the instruction, data gate means for sending the detection data to the transmission path, and receiving the collecting signal output from the central device. While giving an instruction to send the detection data to the transmission line to the data gate means based on the collected signal,
Collecting signal instructing means for instructing the collecting signal gate means to open the gate and for instructing the data gate means to block the output of data, while the central unit is configured to After reading the detection data sent to the transmission line, a new collection signal is transmitted, and based on this collection signal, the gate means is opened in the order of connection of the sensor device to collect the detection data from the corresponding sensor device. It is characterized by being configured in.

The data collecting apparatus according to the second invention, as shown in FIG. 2 of the embodiment, collects data from a plurality of sensor devices that detect generated data and transmit the data. Technically, a data collection device having a central device, a collection signal line extending from the central device and connected by relaying each sensor device, and a data bus for transmitting detection data from each sensor device to the central device are technically provided. As a premise, the sensor device simultaneously collects the detection data and the collection signal gate means for opening the flow of the collection signal output from the central device and relaying the sensor device to be sent to the subsequent sensor device in accordance with an instruction. Data gate means for sending to the data bus, and a collection signal output from the central device, and based on the collection signal, the data An instruction to send the detection data to the data bus to the data gate means, an instruction to open the gate to the collection signal gate means, and an instruction to block the output of data to the data gate means. The central device reads the detection data sent to the data bus and then transmits a new acquisition signal, and the central device transmits the new acquisition signal, and the sensor device is connected based on the acquisition signal. It is characterized in that the gate means is opened in order and the detection data is collected from the corresponding sensor device.

Further, as shown in FIG. 3 of the embodiment, the data collecting device according to the third invention collects data from a plurality of sensor devices for detecting generated data and transmitting the data. Technically, a data collection device having a central device, a collection signal line extending from the central device and connected to relay each sensor device, and a data bus for transmitting detection data of each sensor device to the central device are technically provided. As a premise, the sensor device simultaneously collects the detection data and the collection signal gate means for opening the flow of the collection signal output from the central device and relaying the sensor device to be sent to the subsequent sensor device in accordance with an instruction. A plurality of data gate means for sending to the data bus, and a collection signal output from the central unit, and based on the collection signal, While instructing the plurality of data gate means to send the detection data to the data bus at a predetermined interval, instructing the collection signal gate means to open the gate and to the data gate means Collecting signal indicating means for giving an instruction to prevent the output of data, while the central unit reads the detection data sent to the data bus, and then transmits a new collecting signal to collect the collected data. It is characterized in that the gate means is opened in the order of connection of the sensor device based on the signal and the detection data is collected from the corresponding sensor device.

Furthermore, as shown in FIG. 4 of the embodiment, the data collecting device according to the fourth invention collects data from a plurality of sensor devices which detect generated data and transmits the data. A central device, a collecting signal line extending from the central device and connected to relay each sensor device, a clock signal line extending from the central device for transmitting a clock signal to each sensor device, and each sensor device A data collecting device having a data line for transmitting the detection data in the central device to the central device, and the sensor device is output from the central device and relayed to the sensor device to be sent to a subsequent sensor device. Collecting signal gate means for opening the signal flow based on the instruction,
A serial transmission means for transmitting the detection data in series to the data line based on the clock signal, and a collection signal output from the central device, and detection based on the collection signal to the serial transmission means. Acquisition signal instructing means for instructing the acquisition signal gate means to open the gate while instructing the data signal to be transmitted to the data line, and for instructing the serial transmission means to prevent data output. While the central unit has
After reading the detection data sent to the data line, a new collection signal is transmitted, and based on this collection signal, the gate means is opened in the order of connection of the sensor device to collect the detection data from the corresponding sensor device. It is characterized by being configured as described above.

[0011]

Therefore, according to the first aspect of the present invention, when the collecting process is started, the central unit outputs the collecting signal for a predetermined time. This collected signal is transmitted to the first sensor device connected to the central device, but the collected signal is not sent to the first and subsequent sensor devices due to the closing of the gate means. The data gate means sends out the detection data detected by the device to the transmission path based on the instruction from the collection signal instructing means relating to the first sensor device which has received the above-mentioned collection signal. Then, the collection signal gate means opens the gate based on the instruction from the collection signal instruction means, and the data gate means blocks the output of data.

On the other hand, the central device reads the detection data sent to the transmission path and then sends a new collection signal. This collected signal passes through the collected signal gate means of the first sensor device and reaches the second sensor device. In the first sensor device, the data gate means cannot output data because the data output is blocked. On the other hand, the collected signal sent to the second sensor device is not sent to the third and subsequent sensor devices due to the closing of the collected signal gate means. The processing of the second sensor device based on the collected signal is similar to that of the first sensor device, and the central device that has read the detection data sent to the transmission path also sends a new collected signal, The data is collected by designating the sensor device in a domino manner as the third, fourth, ...

According to the second invention, the data gate means sends the detection data detected by the device to the data bus, while the central device reads the detection data sent to the data bus. Then, a new collection signal is transmitted. The other operation is the same as that of the first invention.

Further, according to the third aspect of the present invention, the detection data of the apparatus is divided and given to each data gate means, and when the detection data is transmitted, each data gate means is based on the instruction from the collection signal instructing means. Sequentially sends detection data to the data bus. On the other hand, the central unit sequentially reads the detection data sent to the data bus and then sends a new collection signal. The other operation is the same as that of the first invention.

In addition, according to the fourth aspect of the present invention, when the detection data is transmitted, the detection data is serially transmitted from the serial transmission means to the data line based on the clock signal according to an instruction from the collection signal instructing means. The detected data is sent to the central unit by serial transmission. The central unit reads the detection data sent to the data line and then sends a new collection signal. The other operation is the same as that of the first invention.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a data collecting apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an overall configuration of a data collection device when a pachinko machine in a game store is used as an information source. This data collecting device is a central device 11 provided in an office or the like in a store.
And sensor devices 12 ₁ , 12 ₂ , 12 ₃ ... 12n connected to this and arranged for each pachinko machine. Each sensor device 12 relays each sensor device 12 and is connected in a so-called "domino" type. Has been done.

In this data collection device, each sensor device 12 has a collection signal line 13 for transmitting a collection signal from the central device 11 and a RESET signal line 14 for transmitting a RESET signal.
Data bus 33 (4 bit parallel transmission), which is connected to relay the sensor device 12 and transmits the detection data.
Are connected from the central device 11 via each sensor device 12.

As shown in FIG. 2, the sensor device 12 includes a receive circuit 21 for receiving a collection signal and a reset signal, and a flip-flop (F) when the RESET signal received by the receive circuit 21 is continuously turned on for a predetermined time. / F) 26 reset timing circuit 24 for resetting the device to initialize the device, and when the collection signal received by the receive circuit 21 is continuously turned on for a fixed time, data and confirmation signals are sent to the data bus 33 at fixed time intervals. A READ signal for generating a read signal is set, while the F / F 26 is set to open the collection signal gate circuit 22 and to prevent the data transmission from the data gate circuit 27 and the confirmation signal gate circuit 29. Corresponding to signal indicating means).

Further, the sensor device 12 is provided with a collection signal gate circuit 22 for opening and closing the flow of the collection signal coming through the receive circuit 21, and a collection signal and the receive circuit 21 passing through the collection signal gate circuit 22. A drive circuit 23 that current-drives the flowing RESET signal and outputs it to the subsequent sensor device 12, a data gate circuit 27 that controls the transmission of 4-bit data (D1 to D4) as detection data, a confirmation that sets a confirmation signal The signal output from the signal setting unit 28, the confirmation signal gate circuit 29 that controls the transmission of the set confirmation signal, and the signal output from the data gate circuit 27 is current-driven to drive the data bus 33 (D1 to D).
It has a drive circuit 30 for sending to 4).

The above-mentioned data collection device is inexpensive, can be easily installed in a cable, and can be installed anywhere. Therefore, it is small in size and low in power consumption (the power is supplied from a central device by a cable). Conditions such as low signal lines, easy cable wiring work and reduction of cable cost are required.

Therefore, in the present embodiment, the receive circuit 21 and the drive circuits 23 and 30 aim at low power consumption and can drive a certain length of cable, and are resistant to noise. The current interface by the current loop is adopted. Of course, if the cable length may be short, a voltage interface such as a TTL interface may be adopted.

The collection signal timing circuit 25 operates when the collection signal is continuously turned on for a certain period of time, but this is to remove a signal such as noise (not continuous for a certain period of time). Similarly, the reset timing circuit 24 also operates when the reset signal is continuously turned on for a fixed time. In the configuration diagram shown in FIG. 2, the acquisition signal timing circuit 25 and the reset timing circuit 24 are separated from each other, but it is possible to have a circuit configuration in which these timing circuits are shared, and the size and cost are reduced. Therefore, it is desirable to adopt a shared circuit configuration.

The F / F 26 is an RS flip-flop, and the F / F 2 is turned off at the timing when the collection signal is turned off after the series of data transmission from the corresponding sensor device 12 is completed.
6 is set to open the collection signal gate circuit 22 and then pass the collection signal sent from the central unit 11.

When the F / F 26 is set, the data gate circuit 27 and the confirmation signal gate circuit 2
Since the closing instruction is given to 9, the gates of these gate circuits 27 and 29 are closed, so that data is not transmitted. Therefore, the detection data and the confirmation signal can be sent to the collected signal from the central device 11 only to the sensor device 12 in which the F / F 26 is reset and the collected signal is received. Only one of the sensor devices 12 will be present.

The data gate circuit 27 and the confirmation signal gate circuit 29 open their gates by the READ signal generated by the collection signal timing circuit 25, and send data (D1 to D4) as the detection data and the confirmation signal. , F / F26 are set, the gate is closed, and even if the READ signal from the collection signal timing circuit 25 is turned on, the detection data and confirmation signal are not sent.

The drive circuit 30 and the drive circuit 2
3 has a current drive circuit. Also,
Power is supplied from the central device 11 to each sensor device 12 via a power cable, and used by the sensor device 12 via a power circuit 31.

The operation of the data collection device will now be described with reference to FIGS. 5 and 6. First, at the start of data collection, all sensor devices 12 are reset and initialized. In this case, the central unit 11 transmits the RESET signal via the RESET signal line 14 (ON for 4 msec). On the other hand, the RESET signal sent to the reset timing circuit 24 via the receive circuit 21 is 2 ms.
If the ON state is continued for ec or more, the F / F-RESET signal is output from the reset timing circuit 24 and the F / F
26 is reset, which causes the acquisition signal gate circuit 22 to be closed, while the data gate circuit 27 and the confirmation signal gate circuit 29 can be opened and closed.

Subsequently, when the central unit 11 turns on the collection signal via the collection signal line 13 for data collection, first, 1
Data collection is started from the second sensor device 12 ₁ . That is, the collected signal from the central unit 11 is sent to the collected signal timing circuit 25 via the receive circuit 21,
When the collected signal is continuously turned on for a fixed time (for example, 0.5 msec) or more, the collected signal timing circuit 25 sets a fixed time interval (for example, 0.5 msec) to READ.
A signal is generated and DAT is applied to the data gate circuit 27.
The A-READ1 signal and the confirmation-READ signal are sent to the confirmation signal gate circuit 29.

Therefore, the data gate circuit 27 is the DA
Based on the TA-READ1 signal, data (D1 to D4) as the detection data of the device is sent to the data bus 33 via the drive circuit 30. After sending this data, 0.
The data OFF state is maintained at a timing of 5 msec, and subsequently, the confirmation signal gate circuit 29 transmits the confirmation signal set by the confirmation signal setting unit 28 based on the confirmation-READ signal via the drive circuit 30. Send to bus 33

Then, the collected signal timing circuit 25 outputs F / F2 when the collected signal is turned off after the confirmation signal is transmitted.
The F / F-SET signal is sent to 6, and the F / F 26 is set. By setting the F / F 26, the gate of the collection signal gate circuit 22 is opened, and when the collection signal is turned on next time, the collection signal is transmitted to the subsequent sensor device 12 ₂ , while the data gate circuit 27 and The confirmation signal gate circuit 29 is closed to prevent sending of the detection data and confirmation signal thereafter.

On the other hand, the central unit 11 outputs 0.75 msec after the collection signal is turned ON when collecting data.
After that, the sensor device 12 ₁ reads the detection data output to the data bus 33. After the data is read, the central unit 11 reads the data (D1 to D4) on the data bus 33.
If is turned off, a confirmation signal (for example, D1 becomes O
N) is checked and the collection signal is turned off after the detection of D1 being turned on.

The confirmation signal is an effective signal for knowing the location of the failure in the case where a failure occurs in the communication path or the sensor device 12, and when failure diagnosis is unnecessary, the operation of the device is not provided. There is no hindrance. If a different value is set for each sensor device 12 with respect to this confirmation signal, it is possible to easily confirm the operating condition and the faulty part of the sensor device 12 or the communication path based on this value.

Next, the second and subsequent sensor devices 12₂,
The data collection of ... will be described. The central device 11
First sensor device 12₁Collected detection data from
0.5msec or more has passed after turning off the collection signal
Second sensor device 12 ₂ON the collection signal for
I do. This collected signal is sent to the sensor device 12 of the first and subsequent units.
Passing through the receive circuit 21 according to₁
Passing through the collection signal gate circuit 22 opened in the above processing
Then, the drive circuit 23 performs current drive,
Second sensor device 12₂Sent to.

This collected signal is sent to the second sensor device 12
₂ is received by the receive circuit 21 according to the second aspect. The subsequent processing in the sensor device 12 ₂ is the same as that in the sensor device 12 ₁ . Data is similarly collected for the third and subsequent units, and each sensor device 12
The collected signal gate circuit 22 according to the above is opened in a domino manner one after another, and the collected signal from the central device 11 is transmitted to the sensor device 12.
₁ , the sensor device 12 ₂ , the sensor device 12 ₃ , ... Are transmitted in this order, and the detection data are sequentially transmitted from each sensor device 12i to the central device.

Next, a data processing device according to the third embodiment will be described. Although the data bus 33 in the first embodiment has a 4-bit configuration, it is not limited to 4-bit. However, when the number of bits of data increases, the number of signal lines of the data bus 33 also increases, which causes "an increase in cable cost". Therefore, in the present embodiment, as shown in FIG. 3, the collection signal timing circuit 34 is changed, and if the detection data is, for example, 8-bit data (D1 to D8), this is changed to the first data 32.
(D1 to D4) and the second data 35 (D5 to D8) are divided, and these are separately output to the data bus 33 and sent to the central unit 11.

In this embodiment, as shown in FIG. 3, in addition to the structure of the first embodiment, a data gate circuit 36 is additionally added to output the second data 35 (D5 to D8), and the data is collected. The signal timing circuit 34 also has a function of outputting a READ signal instructing the data gate circuit 36 to open the gate.

When the collection signal is continuously turned on for a fixed time, the collection signal timing circuit 34 sends data (detection data divided into two) to the data gate circuit 27 and the data gate circuit 36 at a constant time interval. ) Is sent to the data bus 33, and the READ signal for sending the confirmation signal to the confirmation signal gate circuit 29 is also generated. Since the operation related to the transmission of the collected signal related to the opening / closing of the collected signal gate circuit 22 is the same as that of the first embodiment, the description thereof is omitted here.

In the second embodiment, the example in which the detection data is divided into two is shown, but this may be divided into three or more. Further, in this embodiment, even if the number of bits of data to be transmitted is increased, the data bus 33 itself does not differ from the 4-bit parallel transmission, so that the cost of the data bus 33 is not affected.

The second embodiment is particularly effective when the number of bits of the data as the detection data is large, or when the data collection targets are relatively close to each other, such as data collection for each pachinko machine. Target.

An embodiment of the data processing apparatus according to the third embodiment will be described here. FIG. 4 shows the configuration of the sensor device 12 according to the third embodiment. The receive circuit 41 in this sensor device 12 collects the collected signal and R
In addition to the ESET signal, it has a function of receiving a clock signal sent from the central unit 11 through the clock signal line 15, and the drive circuit 43 also has a function of driving the clock signal. Further, the clock signal is sent to the shift register 4 via the acquisition signal timing circuit 45.
8 and the shift register 50, the sensor device 1
The parallel 8-bit data held by 2 as detection data is temporarily stored in the latch circuit 47, and the shift register 4
8 is sent to the data line 53 bit by bit.

The sensor device 12 is reset based on the RESET signal from the central device 11 as shown in FIG. 7, in which case the F / F 46 is synchronized with the clock signal.
Are reset and the device is initialized.

When collecting data, a clock signal is sent from the central device 11 to the sensor device 12 via the clock signal line 15 as shown in FIG. 8, and based on this clock signal, the sensor device 12 holds detection data. The parallel 8-bit data (D1 to D8) to be converted is serially converted via the shift register 48 and is sent to the data line 53 via the drive circuit 51 bit by bit, and the detected data is transmitted to the central unit 11 by the serial transmission method. send. Subsequent to the transmission of the detection data, the confirmation signal is transmitted via the shift register 50. Since the operation relating to the transmission of the collected signal related to the opening / closing of the collected signal gate circuit 22 in the third embodiment is the same as that of the first embodiment, the description thereof will be omitted.

As described above, in the third embodiment, the central unit 1
Since each sensor device 12 sends data in series based on the clock signal from 1, the shift register 48 can be used to easily send information to the central device 11 by serial transmission. Further, since the data line need only be a single line, the arrangement is simple and economical.

As described above, as a condition suitable for the data collecting device shown in each of the above-mentioned embodiments, the data collecting speed is relatively low (data is collected in about 10 msec per sensor device), and detection data per one sensor device is set. The amount of data is small (a few bits), the installation locations of the sensor devices are scattered around, the power of the sensor devices cannot be taken from the AC, and the installation space is small.
The number of signal lines is small and a thin cable can be used, and it is desirable to reduce the cable cost. A sufficient effect can be expected for these conditions.

The advantage of comparing the domino type data collection device described in the above embodiment with the conventional address selection system is that an address bus is not required and the number of signal lines is small. No need for setting, easy installation work, no need for address setting circuit and address comparing circuit, it is cheap, and more sensor device if it has the same configuration as the address selection method (same number of cable cores, etc.) Can be installed, and so on. As described above, the domino type data collection device shown in the above embodiment is less expensive than the address selection method, and particularly in the data collection device having a large number of sensor devices, the cost, the size of the sensor device, and the AC power supply are unnecessary,
Etc. are advantageous.

[0046]

As described above, according to the first aspect of the invention, the sensor device sends the detection data to the transmission line and opens the gate of the gate means based on the collected signal output from the central device. After reading the detection data sent to the transmission line, the central device transmits a new collection signal, and based on this collection signal, the gate means are opened one after another in the order of connection of the sensor devices from the corresponding sensor device. Since the configuration that collects the detection data is used, the address bus for selecting the sensor device is not required, so the number of signal lines can be small, and the addressing to the sensor device is not necessary, and the installation work is easy. There is an effect that an address setting circuit or an address comparison circuit is not necessary, and the device can be economically and compactly configured. The second invention also has the same effect as the first invention.

Further, according to the third invention, a plurality of data gate means are provided, and when the detection data is transmitted, the detection data is sequentially transmitted from each data gate means to the data bus. Even if the number of bits is large, there is no need to increase the number of data bus lines, and the device can be constructed efficiently and economically.

Further, according to the fourth aspect of the invention, at the time of sending the detection data, the structure is adopted in which the detection data is sent to the data line serially based on the clock signal in accordance with the instruction from the collection signal instructing means. It has a simple structure in which it is transmitted in synchronization with the clock signal from the central unit, and has the effect that it is simple and economical to install because it uses a serial transmission line.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a sensor device according to a first embodiment.

FIG. 3 is a configuration diagram of a sensor device according to a second embodiment.

FIG. 4 is a configuration diagram of a sensor device according to a third embodiment.

FIG. 5 is a timing chart according to a RESET signal of the first embodiment.

FIG. 6 is a timing chart according to a collected signal of the first embodiment.

FIG. 7 is a timing chart according to a RESET signal of the third embodiment.

FIG. 8 is a timing chart according to a collection signal of a third embodiment.

FIG. 9 is a configuration diagram of a sensor device according to a conventional example.

[Explanation of symbols]

 11 Central Device 12 Sensor Device 13 Collecting Signal Line 14 RESET Signal Line 21 Receive Circuit 22 Collecting Signal Gate Circuit 25 Collecting Signal Timing Circuit (Collection Signal Indicating Means) 27, 36 Data Gate Circuit 33 Data Bus (Transmission Line) 53 Data Line ( Transmission line)

Claims (4)

[Claims] 1. A plurality of sensor devices for detecting generated data and transmitting the same, a central device for collecting data from these sensor devices, and a sensor device extended from the central device and connected by relaying each sensor device. A data collection device having a collection signal line and a transmission path for transmitting detection data from each sensor device to a central device, wherein the sensor device is output from the central device and relays the sensor device to a subsequent device. Collection signal gate means for opening the flow of the collection signal sent to the sensor device based on the instruction, and data gate means for sending the detection data to the transmission path,
It receives a collection signal output from the central device, gives an instruction to send the detection data to the transmission line to the data gate means based on the collection signal, and opens the gate to the collection signal gate means. And an acquisition signal instructing means for instructing the data gate means to block the output of data.
On the other hand, the central device, after reading the detection data sent to the transmission path, transmits a new collection signal, and based on this collection signal, opens the gate means in the order of connection of the sensor device and opens the corresponding sensor. A domino type data collection device characterized by collecting detection data from the device. 2. A plurality of sensor devices that detect generated data and transmit the data, a central device that collects data from these sensor devices, and a sensor device that extends from the central device and is connected by relaying each sensor device. A data collection device having a collection signal line and a data bus for transmitting detection data from each sensor device to a central device, wherein the sensor device is output from the central device and relays the sensor device to a subsequent device. Collection signal gate means for releasing the flow of the collection signal sent to the sensor device based on the instruction, data gate means for sending the detection data simultaneously and in parallel to the data bus, and receiving the collection signal output from the central device On the basis of the collected signal, the data gate means is instructed to send the detection data to the data bus. Collecting signal instructing means for instructing the collecting signal gate means to open the gate and for instructing the data gate means to block the output of data, while the central unit is arranged to After reading the detection data sent to the bus, a new collection signal is transmitted, and based on this collection signal, the gate means is opened in the order of connection of the sensor device to collect the detection data from the corresponding sensor device. Characteristic Domino type data collection device. 3. A plurality of sensor devices for detecting generated data and transmitting the data, a central device for collecting data from these sensor devices, and a sensor device extended from the central device and connected by relaying the respective sensor devices. A data collection device having a collection signal line and a data bus for transmitting detection data from each sensor device to a central device, wherein the sensor device is output from the central device and relays the sensor device to a subsequent device. Collection signal gate means for releasing the flow of the collection signal sent to the sensor device based on the instruction, a plurality of data gate means for sending the detection data to the data bus simultaneously in parallel, and a collection signal output from the central device On the basis of the collected signal, and sends the detection data to the data bus at predetermined intervals to the plurality of data gate means. While giving an instruction to output, a collection signal instruction means for giving an instruction to open the gate to the collection signal gate means and giving an instruction to block output of data to the data gate means,
On the other hand, the central device, after reading the detection data sent to the data bus, transmits a new collection signal, and based on this collection signal, opens the gate means in the order of connection of the sensor device and opens the corresponding sensor. A domino type data collection device characterized by collecting detection data from the device. 4. A plurality of sensor devices for detecting generated data and transmitting the data, a central device for collecting data from these sensor devices, and a sensor device extended from the central device and connected by relaying the respective sensor devices. A data collection device having a collection signal line, a clock signal line extending from a central device for transmitting a clock signal to each sensor device, and a data line for transmitting detection data in each sensor device to the central device, The sensor device includes a collection signal gate unit that opens a flow of a collection signal output from the central device and relayed to the sensor device and sent to a subsequent sensor device based on an instruction; and the detection data based on the clock signal. Serial transmission means for serially transmitting to the data line, and a collection signal output from the central device, and based on the collection signal And instructing the serial transmission means to transmit the detection data to the data line, while instructing the collection signal gate means to open the gate and preventing the serial transmission means from outputting data. Collecting signal instructing means for giving an instruction,
On the other hand, the central device transmits a new collection signal after reading the detection data sent to the data line, and based on the collection signal, opens the gate means in the order of connection of the sensor device and opens the corresponding sensor. A domino type data collection device characterized by collecting detection data from the device.