CN114077236B - Non-invasive communication checking and controlling device - Google Patents
Non-invasive communication checking and controlling device Download PDFInfo
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- CN114077236B CN114077236B CN202110833223.6A CN202110833223A CN114077236B CN 114077236 B CN114077236 B CN 114077236B CN 202110833223 A CN202110833223 A CN 202110833223A CN 114077236 B CN114077236 B CN 114077236B
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- 238000004891 communication Methods 0.000 title claims abstract description 79
- 230000005540 biological transmission Effects 0.000 claims description 168
- 238000007689 inspection Methods 0.000 claims description 45
- 230000004044 response Effects 0.000 claims description 28
- 238000010586 diagram Methods 0.000 description 19
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 101001028732 Chironex fleckeri Toxin CfTX-A Proteins 0.000 description 2
- 101001028722 Chironex fleckeri Toxin CfTX-B Proteins 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention provides a non-invasive communication checking and controlling device. The non-invasive communication checking and controlling device is used for checking and operating the first equipment control unit and the second equipment control unit. The first control unit has a first connection port. The second control unit has a second connection port. The non-invasive communication checking and controlling device connects the first connection port to the second connection port, so that the controller can check the operation of the first control unit to the second control unit. The non-invasive communication checking and controlling device disconnects at least part of the connection between the first connection port and the second connection port so as to operate the second control unit by the controller, and can also simultaneously maintain the control capability of the first control unit to the second control unit.
Description
Technical Field
The present invention relates to a monitoring device, and more particularly to a non-invasive communication inspection and control device for inspecting and operating at least one transmission communication between control units of devices in an otherwise existing facility.
Background
Early devices were the product of no network technology background. It is quite difficult to manage, upgrade these devices by the network. Therefore, how to monitor, check, manage or upgrade these early devices is one of the subjects of the diligent study of those skilled in the art.
Disclosure of Invention
The invention provides a non-invasive communication checking and controlling device for checking and operating a plurality of device control units in a device.
The non-invasive communication checking and controlling device is used for checking and operating the first control unit and the second control unit in the equipment. The first control unit has a first connection port. The second control unit has a second connection port. The non-invasive communication inspection and control device comprises a controller and a switching circuit. The controller is operable to provide a first mode signal in the first mode and a second mode signal in the second mode. The switching circuit is coupled to the controller, the first control unit and the second control unit. The switching circuit responds to the first mode signal to enable the first connection port to be connected with the second connection port and the controller, so that the controller can check the operation of the first control unit on the second control unit. The switching circuit also responds to the second mode signal to enable the second connection port to be connected with the controller, and disconnects the first connection port from the second connection port and operates the second control unit.
Based on the above, the switching circuit of the non-invasive communication checking and controlling device responds to the first mode signal to connect the first connection port to the second connection port and the controller, so that the controller checks the operation performed by the first control unit on the second control unit. In addition, the switching circuit is also used for responding to the second mode signal to enable the second connection port to be connected with the controller, and at least part of connection between the first connection port and the second connection port is disconnected, so that the controller can keep communication with the first control unit and the second control unit, and a control finger is inserted between the communication to operate the second control unit. In this way, the non-invasive communication inspection and control device can inspect the operation of the first control unit on the second control unit in one state and operate the second control unit in another state.
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a non-invasive communication inspection and control apparatus according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a non-invasive communication inspection and control apparatus according to a second embodiment of the present invention.
Fig. 3A is a schematic diagram illustrating a portion of the operation of the non-invasive communication inspection and control apparatus according to the third embodiment of the present invention in performing the first mode.
Fig. 3B is a schematic diagram illustrating a portion of the operation of the non-invasive communication inspection and control apparatus according to the third embodiment of the present invention in performing the second mode.
Fig. 4 is a schematic diagram illustrating a part of the operation of a non-invasive communication inspection and control apparatus according to a fourth embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a part of the operation of the non-invasive communication inspection and control apparatus according to the fifth embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating a part of the operation of a non-invasive communication inspection and control apparatus according to a sixth embodiment of the present invention.
FIG. 7 is a timing diagram illustrating operations according to embodiments of the present invention.
Description of the reference numerals
100. 200, 300, 400, 500, 600: non-invasive communication checking and controlling device
110. 210, 310, 410, 510, 610: controller for controlling a power supply
120. 220, 320, 420, 520, 620: switching circuit
221 to 224, 321, 322, 421, 422, 521, 522, 621, 622: switching unit
430: bridge circuit
700: operation timing diagram
B1 to B4: signal converter
B5: differential arithmetic unit
D1: first control unit
D2: second control unit
DA: differential amplifier
data_d1, data_d2: data
P1: first connection port
P2: second connection port
N1_1: first end of first switching unit
N2_1: a second end of the first switching unit
N3_1: third terminal of first switching unit
N1_2: first end of second switching unit
N2_2: the second end of the second switching unit
N3_2: third terminal of second switching unit
SM1: first mode signal
SM2, sm2_1, sm2_2: second mode signal
T1_1 to t4_1, t1_2 to t4_2, t1_3 to t8_3, and m1 to m4: and a transmission end.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Referring to fig. 1, fig. 1 is a schematic diagram of a non-invasive communication inspection and control apparatus according to a first embodiment of the present invention. In the present embodiment, the non-invasive communication inspection and control device 100 is used for performing communication inspection and operation on the first control unit D1 and the second control unit D2. The first control unit D1 has a first connection port P1. The second control unit D2 has a second connection port P2. In the present embodiment, the first control unit D1 may operate the second control unit D2 via the non-invasive communication checking and controlling device 100. For example, the first control unit D1 may be a device carrying a human-machine interface (Human Machine Interface, HMI). The second control unit D2 may be an apparatus or device carrying a programmable logic controller (programmable logic controller, PLC). The present invention is not limited to the operation of the first control unit D1 and the second control unit D2 in this embodiment. In some embodiments, the first control unit D1 may operate bi-directionally with the second control unit D2 via the non-invasive communication checking and controlling device 100. In the present embodiment, the first connection port P1 and the second connection port P2 are, for example, connection ports conforming to one serial specification of RS232, RS 422 and RS 485, respectively.
In this embodiment, the non-invasive communication inspection and control apparatus 100 includes a controller 110 and a switching circuit 120. The controller 110 is operated to provide a first mode signal SM1 and a second mode signal SM2.
In the present embodiment, the switching circuit 120 is coupled to the controller 110, the first control unit D1 and the second control unit D2. When receiving the first mode signal SM1, the switching circuit 120 connects the first connection port P1 of the first control unit D1 to the controller 110 and the second connection port P2 of the second control unit D2 in response to the first mode signal SM1. In this way, the controller 110 can check the operation performed by the first control unit D1 on the second control unit D2. The controller 110 may receive communication data between the first control unit D1 and the second control unit D2. The controller 110 checks the communication function between the first control unit D1 and the second control unit D2 according to the communication data, or checks whether the second control unit D2 is operating normally under the control of the first control unit D1 according to the communication data.
In this embodiment, when the second mode signal SM2 is received, the switching circuit 120 makes the second connection port P2 of the second control unit D2 connect to the controller 110 in response to the second mode signal SM2, and disconnects at least part of the connection between the first connection port P1 of the first control unit D1 and the second connection port P2 of the second control unit D2. The controller 110 inserts a control finger via the switching circuit 120 to operate the second control unit D2. For example, the non-invasive communication checking and controlling device 100 may provide the second mode signal SM2 in case of abnormal communication between the first control unit D1 and the second control unit D2, and perform the intervention operation on the second control unit D2. For another example, the controller 110 adjusts, updates or upgrades the setting of the second control unit D2.
In addition, the switching circuit 120 can connect the first connection port P1 to the controller 110 in response to the second mode signal SM2, so that the controller 110 can also operate the first control unit D1. Accordingly, the controller 110 may operate the first control unit D1 and the second control unit D2 in a case where the switching circuit 120 receives the second mode signal SM2. For example, the controller 110 can receive a command or data from the first control unit D1 via the switching circuit 120 and send the command or data to the second control unit D2. The non-invasive communication inspection and control apparatus 100 can maintain the control of the first control unit D1 to the second control unit D2. Further, the controller 110 may insert a control finger via the switching circuit 120 to operate the second control unit D2.
In this embodiment, the controller 110 and the switching circuit 120 may be integrated in the same chip. In some embodiments, the controller 110 and the switching circuit 120 may be integrated in different chips.
Referring to fig. 2, fig. 2 is a schematic diagram of a non-invasive communication inspection and control apparatus according to a second embodiment of the present invention. In the present embodiment, the first connection port P1 of the first control unit D1 includes transmission terminals t1_1 to t4_1. The second port P2 of the second control unit D2 includes transmission terminals T1_2-T4_2. The controller 210 of the non-invasive communication inspection and control apparatus 200 includes transmission terminals t1_3 to t8_3. The switching circuit 220 of the non-invasive communication inspection and control apparatus 200 includes switching units 221 to 224. The switching unit 221 is coupled to the transmission terminals t1_1, t1_2, t1_3, and t2_3. The switching unit 222 is coupled to the transmission terminals t2_1, t2_2, t3_3, t4_3. And so on. In the present embodiment, the controller 210, the first control unit D1 and the second control unit D2 can communicate based on a serial communication protocol (but the invention is not limited thereto). Based on the serial communication protocol, the definitions of the transmission ends t1_1 to t4_1, t1_2 to t4_2, t1_3 to t8_3 are shown in table 1 (the invention is not limited thereto).
Table 1:
| transmission end | RS232 | RS 422 | RS 485 |
| T1_1 | TX pin | A pin | A pin |
| T2_1 | RTS pin | B pin | B pin |
| T3_1 | RX pin | A pin | |
| T4_1 | CTS pin | B pin | |
| T1_2 | RX pin | A pin | A pin |
| T2_2 | CTS pin | B pin | B pin |
| T3_2 | TX pin | A pin | |
| T4_2 | RTS pin | B pin | |
| T1_3 | RX pin | A pin, TX A pin | A pin, TX/RX A pin |
| T2_3 | CTS pin | B pin, TX B pin | B pin, TX/RX B pin |
| T3_3 | TX pin | A pin and RX A pin | A pin, TX/RX A pin |
| T4_3 | RTS pin | B pin, RX B pin | B pin, TX/RX B pin |
| T5_3 | TX pin | A pin, TX A pin | |
| T6_3 | RTS pin | B pin, TX B pin | |
| T7_3 | RX pin | A pin and RX A pin | |
| T8_3 | CTS pin | B pin, RX B pin |
The switching units 221 to 224 receive the first mode signal SM1 to enter the first mode. In the first mode, the switching unit 221 electrically couples the transmission terminals t1_1 and t1_2 in response to the first mode signal SM1. The switching unit 222 electrically couples the transmission terminals t2_1 and t2_2 in response to the first mode signal SM1. The switching unit 223 electrically couples the transmission terminals t3_1 and t3_2 in response to the first mode signal SM1. The switching unit 224 electrically couples the transmission terminals t4_1 and t4_2 in response to the first mode signal SM1. Therefore, in the first mode of the switching units 221 to 224, the controller 110 is able to check the communication between the first control unit D1 and the second control unit D2 via the transmission terminals t1_3, t3_3, t6_3, t8_3. In some embodiments, at least one of the switching units 221-224 receives the first mode signal SM1. Therefore, the controller 110 can check the communication between the first control unit D1 and the second control unit D2 via a part of the transmission terminals t1_3, t3_3, t6_3, t8_3.
The switching units 221-224 receive the second mode signal SM2 to enter the second mode. In the second mode, the switching unit 221 disconnects the electrical coupling between the transmission terminals t1_1 and t1_2 and electrically couples the transmission terminals t1_2 and t2_3 in response to the second mode signal SM2. The switching unit 222 is responsive to the second mode signal SM2 to disconnect the electrical coupling between the transmission terminals t2_1 and t2_2 and electrically couple the transmission terminals t2_2 and t4_3. The switching unit 223 is responsive to the second mode signal SM2 to disconnect the electrical coupling between the transmission terminals t3_1 and t3_2 and electrically couple the transmission terminals t3_1 and t5_3. The switching unit 223 is responsive to the second mode signal SM2 to disconnect the electrical coupling between the transmission terminals t4_1 and t4_2 and electrically couple the transmission terminals t4_1 and t7_3. Therefore, in the second mode, the controller 110 can operate the first control unit D1 and the second control unit D2 via the transmission terminals t1_3 to t8_3. In some embodiments, at least one of the switching units 221-224 receives the second mode signal SM2. Therefore, the controller 110 can operate the first control unit D1 and the second control unit D2 via a part of the transmission terminals t1_3 to t8_3.
The number of the transmission terminals t1_1 to t4_1 of the first connection port P1 in the present embodiment is 4. The number of the transmission terminals t1_1 to t4_1 of the second port P2 is 4 as an example. The number of the transmission terminals t1_3 to t8_3 of the controller 210 is 8 as an example. However, the invention is not limited thereto. The present invention can adjust the number of transmission ends of the first connection port P1, the number of transmission ends of the second connection port P2, and/or the number of controllers 210 based on the protocol/specification. In addition, the arrangement order of the transmission terminals t1_1 to t4_1, and the arrangement order of the transmission terminals t1_3 to t8_3 in the present embodiment can be adjusted or changed according to the design requirement. The present invention is not limited to the arrangement sequence of the transmission terminals t1_1 to t4_1, and the arrangement sequence of the transmission terminals t1_3 to t8_3 in the present embodiment.
The details of the operation of the non-invasive communication inspection and control apparatus to perform the first mode are illustrated next. Referring to fig. 3A, fig. 3A is a schematic diagram illustrating a part of operations of the non-invasive communication inspection and control apparatus according to the third embodiment of the present invention for executing the first mode. For convenience of illustration, the present embodiment only shows at least part of the transmission terminals t1_1, t2_1 of the first connection port P1 (e.g. corresponding to t1_1, t3_1 of table 1), at least part of the transmission terminals t1_2, t2_2 of the second connection port P2 (e.g. corresponding to t1_2, t3_2 of table 1), at least part of the transmission terminals t1_3, t2_3, t3_3 and t4_3 of the controller 310 of the non-invasive communication checking and controlling apparatus 300 (e.g. corresponding to t1_3, t3_3, t5_3 and t7_3 of table 1), and the switching units 321, 322 of the switching circuit 320.
In the present embodiment, the switching unit 321 has a first end n1_1, a second end n2_1, and a third end n3_1. The first terminal n1_1 of the switching unit 321 is coupled to the transmission terminal t1_1 and the transmission terminal t1_3. The second terminal n2_1 of the first switching unit 321 is coupled to the transmission terminal t1_2. The third terminal n3_1 of the switching unit 321 is coupled to the transmission terminal t3_3. The switching unit 322 has a first end n1_2, a second end n2_2, and a third end n3_2. The first terminal n1_2 of the second switching unit 322 is coupled to the transmission terminal t2_2 and the transmission terminal t4_3. The second terminal n2_2 of the second switching unit 322 is coupled to the transmission terminal t2_1. The third terminal n3_2 of the second switching unit 322 is coupled to the transmission terminal t2_3. In the present embodiment, the switching unit 321 and the switching unit 322 are respectively implemented by a relay (e.g. a C-contact relay), but the invention is not limited thereto. In some embodiments, the switching units 321 and 322 are path switching circuits formed by a plurality of transmission gates or a plurality of transistors, respectively.
In the present embodiment, the switching unit 321 connects the first terminal n1_1 of the switching unit 321 and the second terminal n2_1 of the switching unit 321 in response to the first mode signal SM1, and disconnects the connection between the second terminal n2_1 of the switching unit 321 and the third terminal n3_1 of the switching unit 321. The switching unit 322 is connected to the first terminal n1_2 of the switching unit 322 and the second terminal n2_2 of the switching unit 322 in response to the first mode signal SM1, and disconnects the connection between the second terminal n2_2 of the switching unit 322 and the third terminal n3_2 of the switching unit 322. In the case that the switching units 321 and 322 are in the first mode, the transmission terminal t1_1 is electrically coupled to the transmission terminal t1_2, and the transmission terminal t2_1 is electrically coupled to the transmission terminal t2_2.
The first control unit D1 can thus operate the second control unit D2 with the switching units 321, 322 in the first mode. The controller 310 is capable of checking the communication or operation between the first control unit D1 and the second control unit D2 via the transmission terminal t1_3 and the transmission terminal t4_3 without interfering with the above operation.
In the present embodiment, the controller 310 further includes signal converters B1 to B4 and transmission terminals M1 to M4 connected to an external processor (not shown). The signal converter B1 is coupled between the transmission terminal t1_3 and the transmission terminal M1. The signal converter B1 receives data from the transmitting terminal t1_3, and converts the signal format of the received data into a signal (e.g., TTL level) that can be interpreted by the processor. The signal converter B2 is coupled between the transmission terminal t2_3 and the transmission terminal M2. The signal converter B2 receives the data from the transmitting terminal t2_3, converts the received data into a signal level that can be interpreted by the processor, and so on. Thus, the processor is able to interpret a check of the operation performed by the first control unit on the second control unit.
The details of the operation of the non-invasive communication inspection and control apparatus to perform the second mode are illustrated next. Referring to fig. 3B, fig. 3B is a schematic diagram illustrating a part of operations of the non-invasive communication inspection and control apparatus according to the third embodiment of the present invention for executing the second mode. In this embodiment, the switching unit 321 disconnects the connection between the first end n1_1 of the switching unit 321 and the second end n2_1 of the switching unit 321 in response to the second mode signal SM2, and turns on the second end n2_1 of the switching unit 321 and the third end n3_1 of the switching unit 321. The switching unit 322 disconnects the connection between the first terminal n1_2 of the switching unit 322 and the second terminal n2_2 of the switching unit 322 in response to the second mode signal SM2, and turns on the second terminal n2_2 of the switching unit 322 and the third terminal n3_2 of the switching unit 322. In the case that the switching units 321 and 322 are in the second mode, the transmission terminal t1_2 is electrically coupled to the transmission terminal t3_3, but not to the transmission terminal t1_1. The transmission terminal t2_1 is electrically coupled to the transmission terminal t2_3, but not to the transmission terminal t2_2. That is, the switching circuit 320 disconnects the first control unit D1 from the second control unit D2 in response to the second mode signal SM2. The first control unit D1 cannot operate or communicate with the second control unit D2.
Therefore, in case the switching units 321, 322 are in the second mode, the controller 310 is able to operate the first control unit D1 via the transmission terminals t1_3, t2_3 and the second control unit D2 via the transmission terminals t3_3, t4_3. That is, the controller 310 may employ the transmission terminals t1_3 and t2_3 as the first data transmission port, and operate the first control unit D1 through the first data transmission port. The controller 310 may also employ the transmission terminals t3_3 and t4_3 as the second data transmission port, and operate the second control unit D2 through the second data transmission port. For example, the third embodiment can be applied to a connection port conforming to the serial specification of RS 232.
In some embodiments, the controller 310 may include a first differential transmission receiver and a second differential transmission receiver (not shown). The first differential transceiver performs data processing transmission or converts the format of data with the first control unit D1 through the first data transmission port. The second differential transceiver performs data transmission or converts the format of the data with the second control unit D2 through the second data transmission port. In this way, when the switching units 321 and 322 are in the second mode, the controller 310 can operate the first control unit D1 and the second control unit D2 simultaneously.
Fig. 4 is a schematic diagram illustrating a part of the operation of a non-invasive communication inspection and control apparatus according to a fourth embodiment of the present invention. The non-invasive communication inspection and control apparatus 400 of the present embodiment includes a controller 410, a switching circuit 420, and a bridge circuit 430. In the present embodiment, the controller 410 further includes signal converters B1 to B4 and transmission terminals M1 to M4 connected to an external processor (not shown). Unlike the third embodiment, the input terminal of the signal converter B1 is coupled to the transmission terminal M1. The two output terminals of the signal converter B1 are coupled to the transmission terminals t1_3 and t2_3, respectively (e.g., t1_3 and t2_3 in table 1). The two input terminals of the signal converter B2 are coupled to the transmission terminals t1_3 and t2_3, respectively. The output of the signal converter B2 is coupled to the transmission terminal M2, and so on. Therefore, the transmission terminals T1_3 and T2_3 can form a differential signal transmission port. The transmission terminals t3_3, t4_3 (e.g., t5_3, t6_3 corresponding to table 1) may form another differential signal transmission port. The converters B1, B2 may together form a first differential transmission receiver. The converters B3, B4 may together form a second differential transmission receiver. Take signal converters B1, B2 as an example. The signal converter B1 can convert the format of the data received via the transmission terminal M1 into a differential signal format, and provide the data with the differential signal format to the switching circuit 320 via the transmission terminals t1_3 and t2_3. The signal converter B2 can convert the received differential signal level into the TTL level through the transmission terminals t1_3 and t2_3, and provide the data with the TTL level to the processor through the transmission terminal M2.
In the present embodiment, the bridge circuit 430 is coupled to the switching circuit 420 and the controller 410. The bridge circuit 430 receives the first mode signal SM1, and bridges the first end n1_2 of the second switching unit 422 and the third end n3_2 of the second switching unit 322 in response to the first mode signal SM1, and disconnects the first end n1_2 of the second switching unit 422 from the transmission end t4_3.
Therefore, in the case that the switching units 321 and 322 are in the first mode, the controller 410 can check the operation or communication performed by the first control unit D1 on the second control unit D2 through the single data transmission port formed by the transmission terminals t1_3 and t2_3 (e.g. corresponding to the t1_3 and t2_3 of table 1). That is, the controller 310 can check the operation or communication performed by the first control unit D1 to the second control unit D2 by only the first differential transceiver. The second differential transmission receiver may then rest in the first mode.
In addition, when the switching units 421 and 422 are in the second mode, the bridge circuit 430 receives the second mode signal SM2, and disconnects the first terminal n1_2 of the second switching unit 222 from the third terminal n3_2 of the second switching unit 222 in response to the second mode signal SM2, and bridges the transmission terminal t4_3 with the transmission terminal t2_2. Therefore, in the case that the switching units 321, 322 are in the second mode, the first differential transmission receiver formed by the signal converters B1, B2 can operate the first control unit D1 via the single data transmission port formed by the transmission terminals t1_3, t2_3, and the second differential transmission receiver formed by the signal converters B3, B4 can operate the second control unit D2 via the other data transmission port formed by the transmission terminals t3_3, t4_3. For example, the fourth embodiment can be applied to a connection port conforming to the serial specification of RS 422.
In the present embodiment, the bridge circuit 430 is disposed outside the switching circuit 320. However, the present invention is not limited thereto, and in some embodiments, the bridge circuit 430 is disposed inside the switching circuit 320.
In some embodiments, the bridge circuit 430 bridges the first terminal n1_1 of the switching unit 421 and the third terminal n3_1 of the switching unit 321 in response to the first mode signal SM1, and disconnects the transmission terminal t1_3 from the transmission terminal t1_1. The bridge circuit 430 disconnects the first terminal n1_2 of the switching unit 421 from the third terminal n3_1 of the switching unit 422 in response to the second mode signal SM2, and bridges the transmission terminal t1_3 and the transmission terminal t1_1. Thus, the first differential transmission receiver may then rest in the first mode.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a part of the operation of a non-invasive communication inspection and control apparatus according to a fifth embodiment of the present invention. In the non-invasive communication inspection and control apparatus 500 of the present embodiment, the transmission terminal t1_3 is coupled to the first terminal n2_1 of the switching unit 521, and the transmission terminal t2_3 is coupled to the second terminal n2_2 of the switching unit 522. The transmission terminal t4_3 is coupled to the third terminal n3_2 of the switching unit 522, and the transmission terminal t3_3 is coupled to the third terminal n3_1 of the switching unit 521. In this way, the bridge circuit 430 of the fourth embodiment is not required for the non-invasive communication inspection and control apparatus 500. In this embodiment, the transmission terminal t1_3 is connected to the transmission terminal t1_1. The transmission terminal t2_3 is connected to the transmission terminal t2_1. Therefore, the controller 410 can directly perform communication checking and control on the first control unit D1 without going through the switching units 521, 522.
In some embodiments, the transmission terminal t4_3 is coupled to the first terminal n1_2 of the switching unit 522. The transmission terminal t3_3 is coupled to the third terminal n2_1 of the switching unit 521. As such, in such embodiments, the non-invasive communication inspection and control apparatus 500 may also eliminate the bridge circuit 430 of the fourth embodiment.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating a part of the operation of a non-invasive communication inspection and control apparatus according to a sixth embodiment of the present invention. In this embodiment, the non-invasive communication inspection and control apparatus 600 of this embodiment includes a controller 610 and a switching circuit 320. The controller 610 further includes a differential operator B5, compared to the controller 510 of the fifth embodiment. In the present embodiment, the differential operator B5 is coupled to the switching circuit 620. The differential arithmetic unit B5 performs differential arithmetic on the first data at the transmission terminal t1_1 and the second data at the transmission terminal t2_2 to generate differential data, and provides the differential data to the transmission terminal M2. For example, the sixth embodiment is applicable to a serial port conforming to RS 485.
The first input terminal of the differential operator B5 is coupled to one of the first terminal n1_1 and the second terminal n2_1 of the switching unit 621. The second input terminal of the differential operator B5 is coupled to one of the first terminal n1_2 and the second terminal n2_2 of the switching unit 622. The output end of the differential operator B5 is coupled to the transmission end M2. The differential operator B5 can perform differential operation on the first data and the second data to generate differential data. The differential operator B5 supplies differential data to the transmission terminal M2. The embodiment is applicable to data transmission conforming to RS 485. Therefore, in the case that the switching units 621, 622 are in the first mode, the non-invasive communication checking and controlling device 600 can receive the differential data via the transmission terminal M2, and check the operation performed by the first control unit D1 on the second control unit D2 according to the differential data. In the second mode, the differential operator B5 is disabled, so that the operation of the signal converter B2 is not disturbed. Therefore, a processor (not shown) external to the controller 610 in the non-invasive communication checking and controlling device 600 can receive the differential data via the transmission terminal M2, and check the operation of the first control unit D1 on the second control unit D2 according to the differential data.
In some embodiments, during a time interval, a portion of the plurality of switching units is in a first mode in response to the first mode signal and another portion of the plurality of switching units is in a second mode in response to the second mode signal. For example, referring to fig. 3A, 3B and fig. 7, fig. 7 is a timing diagram of operations according to an embodiment of the present invention. The operation timing chart 700 shows the timing of the data data_d1 supplied from the first control unit D1, the timing of the data data_d2 supplied from the second control unit D2, and the timing of the second mode signals sm2_1, sm2_2. In the present embodiment, during the time interval TP1, the switching unit 321 is in the first mode. The first end n1_1 of the switching unit 321 is connected to the second end n2_1 (e.g. the switching unit 321 of fig. 3A). The first control unit D1 can supply the data data_d1 to the second control unit D2. In the time interval TP1, the switching unit 322 receives the first mode signal SM1 to be in the first mode. The first terminal n1_1 of the switching unit 321 is connected to the second terminal n2_1. The first terminal n1_2 of the switching unit 322 is connected to the second terminal n2_2. The second control unit D2 can supply the data data_d2 to the first control unit D1 (e.g., the switching unit 322 of fig. 3A). It should be noted that, in the time interval TP2, the switching unit 321 receives the second mode signal sm2_1 and enters the second mode in response to the second mode signal sm2_1. The switching unit 321 disconnects the first end n1_1 from the second end n2_1, and connects the first end n2_1 to the second end n3_1 (e.g. the switching unit 321 of fig. 3B). That is, in the time interval TP2, the switching unit 321 is in the second mode. Thereafter, the transmission terminal t1_3 of the controller 310 receives the data data_d1 and forwards the data to the transmission terminal t1_2 of the second control unit D2 via the transmission terminal t3_3 of the controller 310. The switching unit 322 is in the first mode. Therefore, the controller 310 can also operate the second control unit D2 during the same time interval in which the second control unit D2 can supply the data data_d2 to the first control unit D1.
In the time interval TP4, the switching unit 321 receives the second mode signal sm2_1 to be in the second mode. At this time, the transmission terminal t1_3 of the controller 310 receives the data_d1 and forwards it to the transmission terminal t1_2 of the second control unit D2 via the transmission terminal t3_3 of the controller 310. The second terminal n3_1 of the switching unit 321 is connected to the second terminal n2_1 (e.g. the switching unit 321 of fig. 3A). The first control unit D1 can supply the data data_d1 to the second control unit D2. In the time interval TP4, the switching unit 322 receives the second mode signal SM2 to be in the second mode, and disconnects the first terminal n1_2 from the second terminal n2_2 in response to the second mode signal SM2_2, and connects the first terminal n2_2 to the second terminal n3_2 (as the switching unit 322 of fig. 3B). At this time, the transmission terminal t4_3 of the controller 310 receives the data data_d2 and forwards it to the transmission terminal T2-1 of the first control unit D1 via the transmission terminal t2_3 of the controller 310. That is, in the time interval TP4, both the switching unit 321 and the switching unit 322 are in the second mode. Therefore, the communication between the first control unit D1 and the second control unit D2 is replaced by forwarding and transmitting by the controller 310, and the control command is inserted in the process, and the controller 310 can operate the first control unit D1 during the same time interval when the second control unit D2 can provide the data data_d2 to the first control unit D1. As such, based on the time-sharing operation as shown in the operation timing diagram 700, the time length for the controller 310 to control the first control unit D1 and the second control unit D2 may be the complete data transmission time length (e.g., the sum time length of the time intervals TP2, TP3, TP 4) of the first control unit D1 and the second control unit D2. Control by the controller 310 is not limited to a brief neutral period TP3 between the first controller D1 and the second controller D2. The controller 310 can obtain a lot more margin for the switching time of the control of the first controller D1 and the second controller D2. The time sharing operation as shown in the operational timing diagram 700 is also applicable to the various embodiments of fig. 1, 2, 4-6.
In summary, the switching circuit of the non-invasive communication checking and controlling device of the present invention responds to the first mode signal to connect the first connection port to the second connection port and the controller, so that the controller checks the operation performed by the first control unit on the second control unit. In addition, the switching circuit also responds to the second mode signal to enable the second connection port to be connected with the controller, and at least part of connection between the first connection port and the second connection port is disconnected, so that the controller can operate the second control unit. In this way, the non-invasive communication inspection and control device can inspect the operation of the first control unit on the second control unit in the state and operate the second control unit in the second mode. In addition, the switching circuit also responds to the second mode signal to enable the first connection port to be connected with the controller. Thus, the non-invasive communication inspection and control apparatus is capable of operating the first control unit and the second control unit in another state.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (11)
1. A non-invasive communication inspection and control apparatus for inspecting and operating a first control unit having a first connection port and a second control unit having a second connection port, the non-invasive communication inspection and control apparatus comprising:
a controller operative to provide a first mode signal and a second mode signal; and
a switching circuit, coupled to the controller, the first control unit, and the second control unit, configured to:
connecting the first connection port to the second connection port and the controller in response to the first mode signal, and checking the operation of the first control unit on the second control unit by the controller
Connecting the second connection port to the controller in response to the second mode signal, and disconnecting at least a portion of the connection between the first connection port and the second connection port to enable the controller to operate the second control unit,
wherein the switching circuit comprises:
the first end of the first switching unit is coupled to the first transmission end of the first connection port and the first transmission end of the controller, the second end of the first switching unit is coupled to the first transmission end of the second connection port, and the third end of the first switching unit is coupled to the second transmission end of the controller; and
the first end of the second switching unit is coupled to the second transmission end of the second connection port and the third transmission end of the controller, the second end of the second switching unit is coupled to the second transmission end of the first connection port, and the third end of the second switching unit is coupled to the fourth transmission end of the controller.
2. The non-invasive communication inspection and control apparatus according to claim 1, wherein the switching circuit is further configured to cause the first connection port to connect to the controller in response to the second mode signal, causing the controller to operate the first control unit.
3. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
the first switching unit is used for responding to the first mode signal to conduct the first end of the first switching unit and the second end of the first switching unit and disconnect the second end of the first switching unit and the third end of the first switching unit, and
the first transmission end of the first connection port is electrically coupled with the first transmission end of the second connection port.
4. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
the second switching unit is used for responding to the first mode signal to conduct the first end of the second switching unit and the second end of the second switching unit, disconnecting the second end of the second switching unit and the third end of the second switching unit, and
the second transmission end of the first connection port is electrically coupled with the second transmission end of the second connection port.
5. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
the first switching unit turns off the first end of the first switching unit and the second end of the first switching unit in response to the second mode signal, and turns on the second end of the first switching unit and the third end of the first switching unit, and
the first end of the second connection port is electrically coupled to the second transmission end of the controller.
6. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
the second switching unit is responsive to the second mode signal to disconnect the first end of the second switching unit and the second end of the second switching unit and to turn on the second end of the second switching unit and the third end of the second switching unit, and
the second transmission end of the first connection port is electrically coupled with the fourth transmission end of the controller.
7. The non-invasive communication inspection and control apparatus according to claim 1, further comprising:
a bridge circuit, coupled to the switching circuit and the controller, configured to:
bridging the first end of the second switching unit and the third end of the second switching unit in response to the first mode signal and disconnecting the connection between the first end of the second switching unit and the third transmission end of the controller, and
and responding to the second mode signal to disconnect the connection between the first end of the second switching unit and the third end of the second switching unit, and bridging the first end of the second switching unit and the third transmission end of the controller.
8. The non-invasive communication inspection and control apparatus according to claim 1, wherein the controller further comprises:
the differential arithmetic unit is configured to perform differential arithmetic on first data at a first transmission end of the first connection port and second data at a second transmission end of the second connection port to generate differential data.
9. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
the first switching unit and the second switching unit receive the first mode signal together in a first time interval, and
the first switching unit and the second switching unit receive the second mode signal together in a second time interval different from the first time interval.
10. The non-invasive communication inspection and control apparatus according to claim 1, wherein:
in a first time interval, one of the first switching unit and the second switching unit receives the first mode signal, and the other of the first switching unit and the second switching unit receives the second mode signal.
11. A non-invasive communication inspection and control apparatus for inspecting and operating a first control unit having a first connection port and a second control unit having a second connection port, the non-invasive communication inspection and control apparatus comprising:
a controller operative to provide a first mode signal and a second mode signal; and
a switching circuit, coupled to the controller, the first control unit, and the second control unit, configured to:
connecting the first connection port to the second connection port and the controller in response to the first mode signal, and checking the operation of the first control unit on the second control unit by the controller
Connecting the second connection port to the controller in response to the second mode signal, and disconnecting at least a portion of the connection between the first connection port and the second connection port to enable the controller to operate the second control unit,
wherein the switching circuit comprises:
the first end of the first switching unit is coupled to the first transmission end of the first connection port and the first transmission end of the controller, the second end of the first switching unit is coupled to the first transmission end of the second connection port, and the third end of the first switching unit is coupled to the second transmission end of the controller; and
the first end of the second switching unit is coupled to the second transmission end of the second connection port, the second end of the second switching unit is coupled to the second transmission end of the first connection port and the third transmission end of the controller, and the third end of the second switching unit is coupled to the fourth transmission end of the controller, wherein the first transmission end of the controller and the third transmission end of the controller are formed into a first data transmission port, and the second transmission end of the controller and the fourth transmission end of the controller are formed into a second data transmission port.
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| TW109128453A TWI768439B (en) | 2020-08-20 | 2020-08-20 | Non-intruder inspecting and injecting protocol device |
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| CN114077236A (en) | 2022-02-22 |
| TWI768439B (en) | 2022-06-21 |
| TW202209834A (en) | 2022-03-01 |
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