Composite sensing device, rotating device and rotating equipment control system

Abstract

The invention discloses a composite sensing device, a rotating device and a rotating equipment control system. The composite sensing device comprises rotating equipment, wherein a driving shaft for providing rotating power for the outside is connected with the rotating equipment; the device also comprises a composite sensing device which detects a plurality of different state quantities related to the operation of the rotating equipment. And the control unit is used for controlling the rotation of the rotating equipment according to different state quantity detection signals detected by the composite sensing device.

Description

Technical Field

[0001] The invention relates to a sensor for detecting a rotation signal, and in particular to a composite sensing device, a rotation device and a rotation equipment control system. Background Art

[0002] In the field of motion control, a sensor device that can detect angles, such as a resolver or a rotary encoder, is installed on the drive shaft of a rotating device. The controller calculates the angular velocity and angular acceleration through internal calculations based on the obtained angle signal, thereby controlling the rotating device.

[0003] On the other hand, unlike the above-mentioned control calculation that is performed by calculating multiple states inside the controller using the signal obtained by a single sensor device, multiple sensor devices that can detect different state quantities are installed on the driving shaft of the rotating device. By using the results of each sensor device, high-precision control calculation can be achieved. The prior art discloses a rotating device control system that controls the rotating device by detecting different device states using n sensor devices. The system structure is as follows: Figure 7 As shown. The detection signals obtained from the n sensing devices S1 to Sn are transmitted through the signal lines SL1 to SLn, respectively, and through the interfaces IF1 to IFn corresponding to each sensing device S1 to Sn. The controller CNTL supplies power to the controller CNTL through the interfaces IF1 to IFn corresponding to each sensing device S1 to Sn, respectively. Note that n refers to an integer of 2 or more. In such a rotating equipment control system, each sensing device S1 to Sn is different and incompatible with each other, so each detection signal of the n sensing devices S1 to Sn must be connected to the controller CNTL through n separate interfaces IF1 to IFn. In this case, n ports corresponding to the sensing devices S1 to Sn are required in the controller CNTL so as to connect the outputs of the n interfaces IF1 to IFn to each port of the sensing devices S1 to Sn. In other words, the number of ports that can be used depends on the number of ports of the controller CNTL. That is, the number of usable sensing devices S1 to Sn is limited by the number of ports of the controller CNTL.

[0004] Furthermore, since the detection signals obtained from the n sensing devices S1 to Sn are provided to the interfaces IF1 to IFn through the signal lines SL1 to SLn, respectively, the number of the signal lines SL1 to SLn increases according to the number of the sensing devices S1 to Sn. Since the number of the signal lines SL1 to SLn increases as the number of the sensing devices S1 to Sn increases, electromagnetic coupling easily occurs between the signal lines of the plurality of signal lines SL1 to SLn. Summary of the invention

[0005] Purpose of the invention: In view of the above problems, the present invention proposes a composite sensing device, a rotating device and a rotating equipment control system, which can detect multiple different state quantities and save signal lines used to transmit multiple detection signals.

[0006] Technical solution: The technical solution adopted by the present invention is: a composite sensing device capable of detecting multiple different state quantities and reducing the number of signal lines transmitting multiple detection signals; a rotating device equipped with a composite sensing device; and a rotating equipment control system equipped with a composite sensing device.

[0007] The composite sensing device of the present invention comprises a sensing device part, a signal conversion circuit part and a communication part; the sensing device part comprises a plurality of sensing devices, and the plurality of sensing devices are used to respectively detect different state quantities; the signal conversion circuit part comprises a plurality of signal conversion circuits, and the plurality of signal conversion circuits are used to convert the detection signals of the plurality of sensing devices into detection signals of the same specification; the communication part is used to send the detection signals of the plurality of sensing devices converted into the same specification to the control unit.

[0008] The communication part is also used to add the device IDs corresponding to the multiple sensor devices to the detection signals corresponding to the multiple sensor devices that have been converted into the same specification, and send them to the common signal line through serial communication.

[0009] The communication part includes a plurality of line drivers corresponding to the plurality of signal conversion circuits, and each output end of the plurality of line drivers is connected to a bus; the plurality of line drivers transmit the detection signals corresponding to the plurality of sensing devices that have been converted into the same specification through the common signal line connected to the bus.

[0010] The output ends of the multiple signal conversion circuits and the input end of the communication unit are connected to a bus; the communication unit receives the detection signals corresponding to the multiple sensor devices that have been converted to the same specification through the bus; the communication unit sends the detection signals corresponding to the multiple sensor devices that have been converted to the same specification to the common signal line.

[0011] The multiple signal conversion circuits and the communication part are connected through a chain; the communication part receives the detection signals corresponding to the multiple sensor devices that have been converted into the same specification through the chain, and sends the detection signals corresponding to the multiple sensor devices that have been converted into the same specification to the common signal line.

[0012] The plurality of sensor devices, the plurality of signal conversion circuits and the communication part are arranged in the same housing.

[0013] The composite sensor device is installed on the driving shaft; the different state quantities include rotation angle, angular velocity and angular acceleration.

[0014] The composite sensing device is integrated with the rotating equipment; the different state quantities include rotation angle, angular velocity and angular acceleration.

[0015] A rotating device of the present invention includes a rotating device and a driving shaft connected to the rotating device, wherein the driving shaft provides rotational power to the outside, and includes the composite sensing device, wherein the composite sensing device is installed on the driving shaft, or the composite sensing device is integrated with the rotating device; the different state quantities include rotation angle, angular velocity and angular acceleration.

[0016] A rotating equipment control system of the present invention includes a rotating equipment, a driving shaft for providing external rotational power is connected to the rotating equipment; it also includes the composite sensing device, the composite sensing device detects multiple different state quantities related to the operation of the rotating equipment; and a control unit, the control unit controls the rotation of the rotating equipment according to different state quantity detection signals obtained by the composite sensing device.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0018] According to the composite sensing device of the present invention, multiple detection signals for detecting different state quantities can be sent to the same standard detection signal. Multiple detection signals converted to the same standard are sent out through a common signal line, thereby reducing the number of signal lines for transmitting multiple detection signals.

[0019] According to the rotating device of the present invention, in the composite sensor device installed on the driving shaft, multiple detection signals detecting different state quantities are converted into detection signals of the same standard. The multiple detection signals converted into the same standard are sent out through a common signal line, thereby reducing the number of signal lines for transmitting the multiple detection signals.

[0020] According to the rotating equipment control system of the present invention, a composite sensor device connected to the rotating equipment can be used to detect different signals in the composite sensor device. According to the rotating equipment control system of the present invention, a plurality of detection signals detecting different state quantities in the composite sensor device attached to the rotating equipment can be converted into detection signals of the same standard, and the plurality of detection signals converted into the same standard can be transmitted to the control unit through a common signal line, thereby saving signal lines for transmitting a plurality of detection signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a configuration diagram of a rotating equipment control system in Example 1 of the present invention;

[0022] Figure 2 It is a configuration diagram of the installation position of the composite sensor device in the rotating equipment control system of Example 1 of the present invention;

[0023] Figure 3 It is a configuration diagram of other examples of the installation position of the composite sensor device in the rotating equipment control system of embodiment 1 of the present invention;

[0024] Figure 4 is a timing diagram of a communication format during data transmission in a rotating equipment control system according to Embodiment 1 of the present invention;

[0025] Figure 5 is a configuration diagram of a rotating equipment control system according to embodiment 2 of the present invention;

[0026] Figure 6 is a configuration diagram of a rotating equipment control system according to Embodiment 3 of the present invention;

[0027] Figure 7 It is a configuration diagram of a common configuration of a rotating equipment control system with multiple sensing devices. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Embodiment 1:

[0030] First, refer to Figure 1 The basic configuration of the rotating equipment control system in Embodiment 1 of the present invention is explained. Figure 1 This is a configuration diagram of the rotating equipment control system in Example 1 of the present invention.

[0031] exist Figure 1 In the embodiment, the rotating equipment control system includes a control unit 110 , a rotating equipment 120 and a composite sensor device 130 .

[0032] The control unit 110 has a controller 111 and a line receiver 112 . The controller 111 drives the rotating device 120 , controls its rotation according to the detection result of the composite sensor device 130 , and provides a rotating device driving signal to the rotating device 120 through the driving line 160 .

[0033] The control unit 110 provides a rotating device driving signal to the rotating device 120 through the driving line 160. The line receiver 112 receives the detection signal of the composite sensor device 130 through the common signal line 140, and provides the received content to the controller 111. In the following description, the control of the rotating device 120 by the controller 111 is referred to as the control of the rotating device 120 by the control unit 110.

[0034] The rotating device 120 is a mechanical element that converts an input electrical signal into physical motion, and has a stator in a fixed state, a rotor that can rotate relative to the stator, and a drive shaft 120a that can provide the rotor with rotation to the outside. The rotating device 120 controls the rotation direction, angle, and speed of the drive shaft 120a by a rotating device drive signal from the control unit 110. The rotation of the drive shaft 120a is supplied to a driven device (not shown) and detected by the composite sensor device 130.

[0035] The composite sensor device 130 includes a sensor device portion 131 , a signal conversion circuit portion 132 , and a communication portion 133 .

[0036] The sensor device part 131 includes a plurality of sensor devices 131_1 to 131_n, each of which detects a different state quantity and is connected to the driving shaft 120a. Figure 1 Each of the plurality of sensor devices 131_1 to 131_n shown in the figure may also be installed around the driving shaft 120a, but any installation form is acceptable as long as the rotation of the driving shaft 120a can be detected.

[0037] The signal conversion circuit part 132 includes a plurality of signal conversion circuits 132_1 to 132_n, and converts the detection signals of the plurality of sensor devices 131_1 to 131_n into detection signals of the same standard. The detection signals of the same standard refer to the detection signals of each of the plurality of sensor devices 131_1 to 131_n.

[0038] Detection signals of the same standard have the same specifications in terms of digital / analog type, signal level, transmission speed, signal format, etc.

[0039] The communication section 133 is composed of a plurality of line drivers 133_1 to 133_n. Output terminals of the plurality of line drivers 133_1 to 133_n are connected to the bus B, respectively. The common signal line 140 is connected to the bus B.

[0040] The plurality of line drivers 133_1 to 133_n assign a device ID identifying each of the plurality of sensing devices 131_1 to 131_n to respective detection signals from the plurality of sensing devices 131_1 to 131_n converted into the same standard by the plurality of signal conversion circuits 132_1 to 132_n.

[0041] The identifier of each of the plurality of sensor devices 131_1 to 131_n is allocated and multiplexed, and is transmitted from the bus B via the serial communication signal line, ie, the common signal line 140 .

[0042] The device ID is multiplexed and transmitted from the bus B through the common signal line 140 by serial communication.

[0043] The bus B and the common signal line 140 are composed of communication lines for serial communication, such as a pair of SD+ and SD- differential transmission signals using the RS485 standard. The common signal line 140 is generally used to send the detection signal of each of the multiple sensor devices 131_1 to 131_n from the composite sensor device 130 to the control unit 110, thereby eliminating the need to set multiple signal lines for each sensor as in the past.

[0044] The combination of the sensor device 131_1, the signal conversion circuit 132_1, and the line driver 133_1 should be arranged close to each other to reduce the volume of the composite sensor device 130. For the compactness of the composite sensor device 130, it is recommended to adopt a close state. The close distance includes contact and connection between modules, and sharing of circuit boards. The same applies to the combination of the sensor device 131_2, the signal conversion circuit 132_2, and the line driver 133_2.

[0045] The plurality of sensing devices 131_1 to 131_n include various sensors for detecting a plurality of different state quantities, such as an angle sensor (such as a rotary transformer or a rotary encoder that generates a rotation angle signal), an angular velocity sensor (such as a tachometer that generates an angular velocity signal), and an angular acceleration sensor (such as a torque sensor that generates an angular acceleration signal). These sensors are used in combination with various sensors for detecting a plurality of different state quantities. The control unit 110 performs control calculations using the detection results of the plurality of different state quantities, thereby achieving high-response control of the rotating device 120.

[0046] The control unit 110 can perform high-response control on the rotating device 120 .

[0047] Installation location of the composite sensor device 130:

[0048] Next, we will refer to Figure 2 The installation position of the composite sensing device 130 in the rotating equipment control system is explained. Figure 2 1 is a configuration diagram showing the installation position of the composite sensor device 130 in the rotating equipment control system according to the first embodiment of the present invention.

[0049] like Figure 2 As shown, the composite sensing device 130 is installed between the rotating equipment 120 and the driven component 200 .

[0050] The composite sensing device 130 is installed around the driving shaft 120a between the rotating device 120 and the driven component 200, such as Figure 2Please note that the multiple sensor devices 131_1-131_n, the multiple signal conversion circuits 132_1-132_n and the multiple line drivers 133_1-133_n in the composite sensor device 130 are installed in the same housing. In this way, the multiple sensor devices can be treated as a single device, so that the detection results of multiple different state quantities can be easily processed.

[0051] Will refer to Figure 3 Another example of the installation position of the composite sensing device 130 is described. Figure 3 FIG. 1 is a configuration diagram showing another example of the installation position of the composite sensor device 130 in the rotating equipment control system of the first embodiment of the present invention. The composite sensor device 130 can be configured as a component of the rotating equipment 120, such as Figure 3 As shown. In this case, the composite sensing device 130 can be installed on the rotating device 120, and the drive shaft 120a protrudes from one side of the rotating device 120, so that the drive shaft 120a passes through. The composite sensing device 130 can determine the material, shape and weight of the composite sensing device 130 shell as needed. The composite sensing device 130 can be configured to be separable from the rotating device 120, or configured inside the rotating device 120.

[0052] Now refer to Figure 4 Table 1 and Table 1 describe the communication format used for communication between the composite sensing device 130 and the control unit 110 of the present invention.

[0053] Figure 4 It is a timing diagram showing the data transmission time of the rotating equipment control system in Example 1 of the present invention.

[0054] Figure 4 1 is a timing diagram showing the communication format during data transmission of the rotating equipment control system in Example 1 of the present invention. Table 1 shows the communication format used by the rotating equipment control system in Example 1 of the present invention.

[0055] Table 1 describes the contents of the fields in the data communication format used in rotating equipment control systems.

[0056] Table 1

[0057]

[0058] In the following description, the plurality of line drivers 133_1 ˜ 133 — n and the line receiver 112 each have a line transceiver function, enabling bidirectional communication between the composite sensor device 130 and the control unit 110 .

[0059] Figure 4 (a) shows the detection signal request sent by the control unit 110 to the composite sensor device 130.

[0060] The control unit 110 monitors whether there is an idle state of one or more data frames starting from the last field of the previous data of the composite sensor device 130. One data frame is a data frame sent to the control unit from one sensor device 131_i in the composite sensor device 130. The control unit 110 data frame is a unit of a series of data sent to the control unit from any sensor device 131_i including the composite sensor device 130.

[0061] The control unit 110 transmits a control field CF as a detection signal request and a device ID field IDF as a device designation to the composite sensor device 130 after the idle state lasts for one data frame or more from the last part of the previous data frame.

[0062] In the composite sensor device 130, when the control unit 110 sends the control field CF, the multiple line drivers 133_1-133_n determine that the communication has started. In this way, the multiple line drivers 133_1-133_n can avoid erroneously judging that the communication has started while other communications have already started.

[0063] When each line driver 133_1 to 133_n determines that communication has started based on the control field CF, it determines whether the request is issued to itself based on the device ID included in the device ID field IDF following the control field CF.

[0064] When any line driver 133_i among line drivers 133_1 to 133_n determines that the request from control unit 110 is for itself, it converts the detection signal of sensor device 131_i of the same specification into a signal converted by circuit 132_i and sends it to control unit 110 via bus B via common signal line 140.

[0065] Figure 4 (b) shows the communication format of the detection signal sent from the composite sensor device 130 to the control unit 110. The communication format of the detection signal sent from the composite sensor device 130 to the control unit 110 is as follows: Figure 4 As shown in (b), the control includes a pattern CF, a device ID field IDF, a status field SF, data fields DF0 to DFn and a check field CRC.

[0066] Table 1 shows the Figure 4The field name and field content of each field contained in the detection signal shown in the timing diagram of (b). The control field CF is command information. The device ID field IDF is information for identifying the device ID of multiple sensing devices 131_1 to 131_n. The status field SF is the status identification information of the device. The data fields DF0~DFn are information on the status quantity detected by the device. The check field CRC is error check information for performing CRC (cyclic redundancy check) on the start bit of all fields except the CRC field and all bits except the delimiter.

[0067] The above description is that, based on the detection signal request from the control unit 110 and the designation of the device, the composite sensor converts the detection signal from any specific sensor device 131_i in the composite sensor device 130 into the same standard and then sends it to the control unit 110 from the bus B via the common signal line 140. However, the operation is not limited to this.

[0068] For example, in response to a detection signal request from an unspecified device from the control unit 110, the sensor devices 131_1 to 131_n in the composite sensor device 130 may convert all detection signals into the same specification and send them to the control unit 110 from the bus B via the common signal line 140 in a predetermined order.

[0069] In addition, in the absence of device designation and detection signal request from the control unit 110, after the composite sensor debugging converts the detection signals from the sensor devices 131_1~131_n in 130 into the same standard, the sensor device 131 can send them from bus B via the common signal line 140 to the control unit 110 in the order of 131_1~131_n at a regular or scheduled time.

[0070] According to the above description, the composite sensor device 130, since the multiple sensor devices 131_1~131_n that respectively detect different state quantities convert the detection signal into a detection signal of the same specification, a device ID is added to the multiple detection signals converted into the same standard, and they are sent to the control unit 110 through the common signal line 140. By sending in the direction, the signal line for transmitting multiple detection signals from the multiple sensor devices 131_1~131_n can be saved.

[0071] Embodiment 2:

[0072] For the structure of the rotating equipment control system in Embodiment 2 of the present invention, refer to Figure 5 Provide explanation. Figure 5 It is a block diagram showing a rotating equipment control system in Embodiment 2 of the present invention.

[0073] In the second embodiment, the same reference numerals are used for the same parts as those in the first embodiment, and duplicate descriptions are omitted. Hereinafter, the second embodiment will be described mainly with respect to the parts that are different from those in the first embodiment.

[0074] Figure 5 The composite sensor device 130 shown includes a plurality of sensor devices 131_1 to 131_n, a plurality of signal conversion circuits 132_1 to 132_n, and a single line driver 133a. The outputs of the plurality of sensor devices 131_1 to 131_n are connected to the inputs of the corresponding plurality of signal conversion circuits 132_1 to 132_n. The respective outputs of the plurality of signal conversion circuits 132_1 to 132_n are connected to bus B. In addition to the respective outputs of the plurality of signal conversion circuits 132_1 to 132_n, bus B is also connected to the input of line driver 133a.

[0075] The plurality of signal conversion circuits 132_1 to 132_n convert the detection signals of the plurality of sensor devices 131_1 to 131_n into detection signals of the same specification, and add a signal for identifying each of the plurality of sensor devices to the detection signals converted into the same specification, and output them to the line driver 133a through the bus B.

[0076] The line driver 133a receives multiple sensor signals converted into the same specification by multiple signal conversion circuits 132_1~132_n. The line driver 133a receives each detection signal from the sensor devices 131_1~131_n through bus B. The line driver 133a assigns a device ID corresponding to the identification signal to the multiple sensor devices 131_1~131_n, multiplexes them through serial communication, and sends them through the common signal line 140.

[0077] In the structure of the above embodiment 2, the composite sensor device 130 has a plurality of sensor devices that detect different state quantities respectively and converts the detection signals from the sensor devices 131_1 to 131_n into detection signals of the same specification, and adds a device ID to the plurality of detection signals converted into the same standard, and the control unit 110 can save a plurality of detection signal lines sent from the plurality of sensor devices 131_1 to 131_n by sending them toward 0 through the common signal line 140. In addition, since a single line driver 133a sends the detection signal to the common signal line 140, it is easier to manage the authority to send data than in the case of a plurality of line drivers 133_1 to 133_n.

[0078] Example 3:

[0079] For the structure of the rotating equipment control system in Embodiment 3 of the present invention, refer to Figure 6 Provide explanation. Figure 6It is a block diagram showing a rotating equipment control system in Embodiment 3 of the present invention.

[0080] In the third embodiment, the same reference numerals are used for the same parts as those in the second embodiment, and duplicate descriptions are omitted. Hereinafter, the structure of the third embodiment will be mainly described with the difference from the second embodiment.

[0081] exist Figure 6 In the composite sensor device 130 shown, each of the plurality of signal conversion circuits 132_1 to 132_n and a single line driver 133a are connected to each other via a digital link DC.

[0082] The plurality of signal conversion circuits 132_1 to 132_n convert the detection signals of the plurality of sensor devices 131_1 to 131_n into detection signals of the same specification, and add signals identifying the plurality of sensor devices to the detection signals of the same specification, and output them to the line driver 133a through the digital link DC.

[0083] The line driver 133a is a plurality of sensing signals converted into the same specification by a plurality of signal conversion circuits 132_1 to 132_n. The line driver 133a receives the respective detection signals from the plurality of signal conversion circuits 131_1 to 131_n via a digital link DC. The line driver 133a allocates a device ID corresponding to the signal identifying the plurality of sensing devices 131_1 to 131_n, and multiplexes the signals through serial communication and sends them through a common signal line 140.

[0084] In the structure of the above embodiment 3, the composite sensor device 130 has a plurality of sensor devices 131_1 to 131_n that detect different state quantities respectively, and converts the detection signals from the n sensor devices 131_1 to 131_n into detection signals of the same specification, and adds a device ID to the plurality of detection signals converted into the same standard, and the control unit 110 can save the transmission of a plurality of detection signal lines from the plurality of sensor devices 131_1 to 131_n by sending them toward 0 through the common signal line 140. In addition, since the single line driver 133a connected to the digital link DC transmits the detection signal to the common signal line 140, the authority management of the transmitted data becomes easier than using a plurality of line drivers 133_1 to 133_n.

[0085] Embodiment effect:

[0086] According to the rotating equipment control system of embodiments 1 to 3 of the present invention, since the multiple sensor devices 131_1-131_n in the composite sensor device 130 can save wires from transmitting multiple detection signal lines, the input ports used in the controller 111 can be reduced compared to the past. Therefore, the maximum number of the multiple sensor devices 131_1 to 131_n is no longer limited by the number of input ports of the controller 111. In addition, when the number of the multiple sensor devices 131_1 to 131_n is increased, it is not necessary to use an expensive controller 111 with a large number of input ports.

[0087] According to the rotating equipment control system of embodiments 1 to 3 of the present invention, since only the common signal line 140 is used when sending the detection signal from the composite sensor device 130 to the control unit 110, there will be no crosstalk or noise problems caused by electromagnetic coupling between multiple signal lines as in the past. Therefore, the detection signal can be sent in a more stable state than in the past. Therefore, in the rotating equipment control system of embodiments 1 to 3 of the present invention, the control unit 110 can correctly use the detection results of multiple different state quantities, and can control the rotating equipment 120 with high responsiveness and high precision. Therefore, in motion control, multiple different detection signals can be used to control the rotating equipment 120 with high precision.

[0088] According to the rotating equipment control system of embodiments 1 to 3 of the present invention, since a plurality of detection signals of different specifications are converted into a plurality of detection signals of the same specification in the composite sensor device 130, and since only the common signal line 140 is used when sending the detection signal, it is possible to replace with another composite sensor device 130 having a different number of sensors and sensor types. Furthermore, even when replacing with a composite sensor device 130 having a different number of sensors and sensor types, processing can be performed without changing the connection from the composite sensor device 130 to the control unit 110.

[0089] According to the rotating device control system of the first to third embodiments of the present invention, since the plurality of sensor devices 131_1 to 131_n, the dual-multiple signal conversion circuits 132_1 to 132_n, the single line driver 13a, or the plurality of line drivers 133_1 to 133_n are housed in the same housing as the composite sensor device 130, the plurality of sensor devices can be treated as one device, and the detection results of the plurality of respectively different state quantities related to the operation of the rotating device 120 can be easily processed. In addition, since the composite sensor device 130 can be attached to and detached from the rotating device 120, or can be integrated with the rotating device 120, the plurality of sensor devices can be treated as a single device, and the detection results of the plurality of respectively different state quantities related to the operation of the rotating device 120 can be easily processed.

[0090] Other embodiments:

[0091] In the description of the above embodiments 1 to 3, a specific example of sending the respective detection signals from the plurality of sensing devices 131_1 to 131_n to the control unit 110 is shown, from a single line driver 133a or a plurality of line drivers 133_1 to 133_n to the line receiver 112 via the common signal line 140, but is not limited thereto.

[0092] For example, by replacing the single line driver 133a or the plurality of line drivers 133_1 to 133_n and the line receiver 112 with a line transceiver capable of bidirectional communication, bidirectional communication can be performed between the composite sensor device 130 and the control unit 110. If bidirectional communication is performed in this manner, any sensor device 131_x in the composite sensor device 130 can be called from the control unit 110 to obtain a desired detection signal at any timing.

[0093] In the description of the rotating equipment control system of the above embodiments 1 to 3, the serial communication between the control unit 110 and the composite sensor device 130 is modulated using a step-by-step serial communication form, but the present invention is not limited to this communication form and a synchronous serial communication form may also be used.

[0094] In the above embodiments 1 to 3, it is assumed that the rotating device 120 connected to the composite sensor device 130 is a motor, but it is not limited to this. It can also be a rotary actuator that converts air pressure or hydraulic pressure into rotary motion, or a heat engine that uses fuel to generate rotary motion.

Claims

1. A composite sensor device, characterized in that: The invention comprises a sensor device part (131), a signal conversion circuit part (132) and a communication part (133); the sensor device part (131) comprises a plurality of sensor devices (131_1 to 131_n), and the plurality of sensor devices (131_1 to 131_n) are used to detect different state quantities; the signal conversion circuit part (132) comprises a plurality of signal conversion circuits (132_1 to 132_n), and the plurality of signal conversion circuits (132_1 to 132_n) are used to convert detection signals corresponding to the plurality of sensor devices into detection signals of the same specification; the communication part (133) is used to send the detection signals corresponding to the plurality of sensor devices, which have been converted into the same specification, to a control unit (110) via a common signal line (140).

2. The composite sensor device according to claim 1, characterized in that: The communication part (133) is also used to add the device IDs corresponding to the multiple sensor devices to the detection signals corresponding to the multiple sensor devices that have been converted into the same specification, and send them to the common signal line (140) through serial communication.

3. The composite sensor device according to claim 1 or 2, characterized in that: The communication part (133) includes a plurality of line drivers (133_1 to 133_n) corresponding to the plurality of signal conversion circuits (132_1 to 132_n), and each output end of the plurality of line drivers is connected to a bus (B); the plurality of line drivers (133_1 to 133_n) transmit the detection signals corresponding to the plurality of sensor devices that have been converted into the same specification through the common signal line (140) connected to the bus (B).

4. The composite sensor device according to claim 1 or 2, characterized in that: The output ends of the plurality of signal conversion circuits (132_1 to 132_n) and the input end of the communication unit (133) are connected to a bus (B); the communication unit (133) receives detection signals corresponding to the plurality of sensor devices that have been converted to the same specification through the bus (B); and the communication unit (133) sends the detection signals corresponding to the plurality of sensor devices that have been converted to the same specification to the common signal line (140).

5. The composite sensor device according to claim 1 or 2, characterized in that: The multiple signal conversion circuits (132_1~132_n) and the communication part (133) are connected via a chain (DC); the communication part (133) receives the detection signals corresponding to the multiple sensor devices that have been converted to the same specification through the chain (DC), and sends the detection signals corresponding to the multiple sensor devices that have been converted to the same specification to the common signal line (140).

6. The composite sensor device according to any one of claims 1 to 5, characterized in that: The plurality of sensor devices (131_1 to 131_n), the plurality of signal conversion circuits (132_1 to 132_n) and the communication part (133) are arranged in the same housing.

7. The composite sensor device according to any one of claims 1 to 6, characterized in that: The composite sensor device is installed on the driving shaft (120a); the different state quantities include rotation angle, angular velocity and angular acceleration.

8. The composite sensor device according to any one of claims 1 to 6, characterized in that: The composite sensing device is integrated with the rotating device (120); the different state quantities include rotation angle, angular velocity and angular acceleration.

9. A rotating device, comprising a rotating device (120) and a driving shaft (120a) connected to the rotating device (120), wherein the driving shaft (120a) provides a rotating power to the outside, characterized in that: It comprises the composite sensing device described in any one of claims 1 to 6, wherein the composite sensing device is mounted on the drive shaft (120a), or the composite sensing device is integrated with the rotating device (120); the different state quantities include rotation angle, angular velocity and angular acceleration.

10. A rotating equipment control system, characterized in that: It comprises a rotating device (120), to which a driving shaft (120a) for providing external rotational power is connected; it also comprises a composite sensing device as described in any one of claims 1 to 8, which detects a plurality of different state quantities related to the operation of the rotating device (120); and a control unit (110), which controls the rotation of the rotating device (120) according to different state quantity detection signals obtained by the composite sensing device.

Images