CN203643814U - Digital quantity output circuit and digital quantity output board card - Google Patents
Digital quantity output circuit and digital quantity output board card Download PDFInfo
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- CN203643814U CN203643814U CN201320808910.3U CN201320808910U CN203643814U CN 203643814 U CN203643814 U CN 203643814U CN 201320808910 U CN201320808910 U CN 201320808910U CN 203643814 U CN203643814 U CN 203643814U
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- photoelectrical coupler
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- relay
- electric capacity
- digital quantity
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- 230000005611 electricity Effects 0.000 claims description 23
- 230000001052 transient effect Effects 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 9
- 230000005693 optoelectronics Effects 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model provides a digital quantity output circuit and a digital quantity output board card. The digital quantity output circuit comprises an optoelectronic coupler and a relay, the optoelectronic coupler is electrically connected with a central processing unit and the relay, and the relay is electrically connected with a power supply and a controlled device; the optoelectronic coupler is turned on when receiving a first voltage signal input from the central processing unit, triggers a normally open contact of the relay to close, and switches on the electric connection between the power supply and the controlled device; and the optoelectronic coupler is cut off when receiving a second voltage signal input from the central processing unit, triggers the normally open contact of the relay to open, and switches off the electric connection between the power supply and the controlled device. According to the digital quantity output circuit and the digital quantity output board card, stability of communication performance of the digital quantity output board card is improved, and train traffic safety is ensured.
Description
Technical field
The utility model relates to communication technical field, relates in particular to a kind of digital quantity output circuit and digital output card.
Background technology
In train travelling process, MVB (Multifunction Vehicle Bus, being called for short MVB) network exports a large amount of digital quantity signals to controlled plant by gateway and digital output card, controls its action, to realize the control to train operation state.Concrete, main control equipment is by controller local area network (Controller Area Network, being called for short CAN) control signal inputs to CAN driving circuit by bus, and input to CPU (central processing unit) through CAN driving circuit, CPU (central processing unit) inputs to Multipath digital quantity output circuit after the control signal receiving is processed, control figure amount output circuit, for controlled plant provides working power, moves to control outside controlled plant.
In prior art, by relay is set in digital quantity output circuit, to avoid large electric current, the impact of strong-electromagnetic field on digital output card communication performance from outside controlled plant.
But there is following defect in prior art: only comprise relay one deck buffer circuit, the isolation effect that large electric current from outside controlled plant, strong-electromagnetic field are disturbed is good not, the less stable that makes digital output card communication performance, affects train traffic safety.
Utility model content
The utility model provides a kind of digital quantity output circuit and digital output card, in order to solve the less stable of the digital output card communication performance existing in prior art, affects the problem of train traffic safety.
On the one hand, the utility model provides a kind of digital quantity output circuit, comprising: photoelectrical coupler and relay, wherein:
Described photoelectrical coupler is electrically connected with CPU (central processing unit) and described relay respectively, and described relay is electrically connected with power supply and controlled plant respectively;
Described photoelectrical coupler, for conducting in the time receiving the first voltage signal of described CPU (central processing unit) input, so that described relay obtains is electric, and triggers the normally opened contact closure of described relay; And for ending in the time receiving the second voltage signal of described CPU (central processing unit) input, so that described relay electric-loss, and the described normally opened contact that triggers described relay disconnects;
Described relay, in the time that described normally opened contact is closed, connects the electrical connection between described power supply and described controlled plant, thinks that controlled plant provides working power; And in the time that described normally opened contact disconnects, disconnect the electrical connection between described power supply and described controlled plant, to stop providing working power as described controlled plant.
Digital quantity output circuit as above, also comprises: the first power supply, the first pull-up resistor, second source and the second pull-up resistor;
The positive pole of the input end of described photoelectrical coupler is electrically connected with described the first power supply by described the first pull-up resistor, the negative pole of the input end of described photoelectrical coupler is electrically connected with described CPU (central processing unit), the positive pole of the output terminal of described photoelectrical coupler is electrically connected with described second source by described the second pull-up resistor, and the negative pole of the output terminal of described photoelectrical coupler is electrically connected with the positive pole of the coil of described relay; The minus earth of the coil of described relay, the moving contact in the described normally opened contact of described relay is electrically connected with described power supply, and the stationary contact in the described normally opened contact of described relay is electrically connected with controlled plant.
Digital quantity output circuit as above, also comprises: the first diode;
The plus earth of described the first diode, the negative pole of described the first diode is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described relay also for: in the time that described normally opened contact disconnects, to described the first diode discharge.
Digital quantity output circuit as above, also comprises: light emitting diode and divider resistance;
The positive pole of described light emitting diode is electrically connected with the first end of described divider resistance, the minus earth of described light emitting diode; The second end of described divider resistance is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described light emitting diode, for luminous when the described photoelectrical coupler conducting; And luminous for stopping in the time that described photoelectrical coupler ends;
Described divider resistance, the voltage of exporting for the negative pole of the output terminal to described photoelectrical coupler carries out dividing potential drop.
Digital quantity output circuit as above, also comprises: Transient Voltage Suppressor;
The first end of described Transient Voltage Suppressor is connected with the negative electricity of the output terminal of described photoelectrical coupler, the second end ground connection of described Transient Voltage Suppressor;
Described Transient Voltage Suppressor, in the time that the voltage of the negative pole output of the output terminal of described photoelectrical coupler is greater than setting voltage value, by the minus earth of the output terminal of described photoelectrical coupler.
Digital quantity output circuit as above, also comprises: the first electric capacity, the second electric capacity, the 3rd electric capacity and the 4th electric capacity;
The first end of described the first electric capacity is electrically connected with described the first power supply, and the second end of described the first electric capacity is connected with the negative electricity of the input end of described photoelectrical coupler;
The first end of described the second electric capacity is electrically connected with the positive pole of the input end of described photoelectrical coupler, and the second end of described the second electric capacity is connected with the negative electricity of the input end of described photoelectrical coupler;
The negative electricity of described the 3rd first end of electric capacity and the input end of described photoelectrical coupler is connected, the second end ground connection of described the 3rd electric capacity;
The first end ground connection of described the 4th electric capacity, the second end of described the 4th electric capacity is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described the first electric capacity, described the second electric capacity, described the 3rd electric capacity and described the 4th electric capacity, for filtering.
Digital quantity output circuit as above, also comprises: the second diode;
Stationary contact in the described normally opened contact of the positive pole of described the second diode and described relay is electrically connected, and the negative pole of described the second diode is electrically connected with described controlled plant.
On the other hand, the utility model provides a kind of digital output card, comprising: controller area network driving circuit, CPU (central processing unit) and at least one digital quantity output circuit as above, wherein:
Described CAN driving circuit is electrically connected with main control equipment by CAN bus, and described CPU (central processing unit) is electrically connected with described CAN driving circuit, and described digital quantity output circuit is electrically connected with power supply and controlled plant respectively;
Described CAN driving circuit, for inputing to described CPU (central processing unit) by the control signal of described main control equipment output;
Described CPU (central processing unit), for described control signal is processed, and the first voltage signal that processing is obtained or second voltage signal input to described digital quantity output circuit, to be switched on or switched off being electrically connected between described power supply and described controlled plant.
The digital quantity output circuit that the utility model provides and digital output card, comprise the two-layer buffer circuit of photoelectrical coupler and relay, improve the isolation effect that the large electric current from outside controlled plant, strong-electromagnetic field are disturbed, the stability that has improved digital output card communication performance, has guaranteed train traffic safety.
Accompanying drawing explanation
The structural representation of the embodiment of digital quantity output circuit that Fig. 1 provides for the utility model;
The structural representation of another embodiment of digital quantity output circuit that Fig. 2 provides for the utility model;
The structural representation of the embodiment of digital output card that Fig. 3 provides for the utility model.
Embodiment
Below by specific embodiment and accompanying drawing, the technical solution of the utility model is described in further detail.
The structural representation of the embodiment of digital quantity output circuit that Fig. 1 provides for the utility model.As shown in Figure 1, this digital quantity output circuit 10 specifically can comprise: photoelectrical coupler 11 and relay 12, wherein:
Concrete, in the time that CPU (central processing unit) 13 meets the first voltage signal of photoelectrical coupler 11 turn-on conditions to photoelectrical coupler 11 inputs, photoelectrical coupler 11 conductings, make the coil of relay 12 obtain electric, the normally opened contact closure of trigger relay 12, connect the electrical connection between power supply 14 and controlled plant 15, thereby for controlled plant 15 provides working power, control controlled plant 15 and move.
In the time that CPU (central processing unit) 13 inputs to photoelectrical coupler 11 the second voltage signal that does not meet photoelectrical coupler 11 turn-on conditions, photoelectrical coupler 11 ends, make the coil losing electricity of relay 12, the normally opened contact of trigger relay 12 disconnects, disconnect the electrical connection between power supply 14 and controlled plant 15, thereby stop providing working power for controlled plant 15.
The digital quantity output circuit that the present embodiment provides, comprise the two-layer buffer circuit of photoelectrical coupler and relay, improve the isolation effect that the large electric current from outside controlled plant, strong-electromagnetic field are disturbed, improved the stability of digital output card communication performance, guaranteed train traffic safety.
The structural representation of another embodiment of digital quantity output circuit that Fig. 2 provides for the utility model.As shown in Figure 2, the present embodiment has further described a kind of concrete structure of digital quantity output circuit 10 on basis embodiment illustrated in fig. 1, on basis embodiment illustrated in fig. 1, this digital quantity output circuit 10 can also comprise: the first power supply 21, the first pull-up resistor 22, second source 23 and the second pull-up resistor 24.
The positive pole of the input end of photoelectrical coupler 11 is electrically connected with the first power supply 21 by the first pull-up resistor 22, the negative pole of the input end of photoelectrical coupler 11 is electrically connected with CPU (central processing unit) 13, the positive pole of the output terminal of photoelectrical coupler 11 is electrically connected with second source 23 by the second pull-up resistor 24, and the negative pole of the output terminal of photoelectrical coupler 11 is electrically connected with the positive pole of the coil K1 of relay 12; The minus earth of the coil K1 of relay 12, the moving contact A11 in the normally opened contact (A11, A12) of relay 12 is electrically connected with power supply 14, and the stationary contact A12 in the normally opened contact (A11, A12) of relay 12 is electrically connected with controlled plant 15.
Concrete, be specifically as follows+3V of the magnitude of voltage of the first power supply 21, the resistance value of the first pull-up resistor 22 is specifically as follows 470 Ω, be specifically as follows+15V of the magnitude of voltage of second source 23, the resistance value of the second pull-up resistor 22 is specifically as follows 100 Ω.In the time of the first voltage signal that CPU (central processing unit) 13 input voltage values are 0V, photoelectrical coupler 11 conductings, normally opened contact (the A11 of relay 12, A12) closure, connect the electrical connection between power supply 14 and controlled plant 15, the magnitude of voltage of power supply 14 is specifically as follows DC24V or DC110V.In the time of second voltage signal that CPU (central processing unit) 13 input voltage values are 3.3V, photoelectrical coupler 11 ends, and the normally opened contact (A11, A12) of relay 12 disconnects, and disconnects the electrical connection between power supply 14 and controlled plant 15.
Further, this digital quantity output circuit 10 can also comprise: the first diode 25.
The plus earth of the first diode 25, the negative pole of the first diode 25 is connected with the negative electricity of the output terminal of photoelectrical coupler 11.
Concrete, when photoelectrical coupler 11 ends, normally opened contact (the A11 of relay 12, A12) while disconnection, electric current in the coil K1 of relay 12 is because inertia forms closed-loop path by the first diode 25, discharge to the first diode 25, thereby reduce the impact of inertial current to photoelectrical coupler 11.
Further, this digital quantity output circuit 10 can also comprise: light emitting diode 26 and divider resistance 27.
The positive pole of light emitting diode 26 is electrically connected with the first end of divider resistance 27, the minus earth of light emitting diode 26; The second end of divider resistance 27 is connected with the negative electricity of the output terminal of photoelectrical coupler 11.
Light emitting diode 26, for luminous when photoelectrical coupler 11 conducting; And luminous for stopping in the time that photoelectrical coupler 11 ends.
Divider resistance 27, the voltage of exporting for the negative pole of the output terminal to photoelectrical coupler 11 carries out dividing potential drop.
Concrete, by the light emitting diode 26 conducting cut-off situation of display light electric coupler 11 is intuitively set, divider resistance 27 is for the protection of light emitting diode 26, and resistance is specifically as follows 3000 Ω.
Further, this digital quantity output circuit 10 can also comprise: Transient Voltage Suppressor 28;
The first end of Transient Voltage Suppressor 28 is connected with the negative electricity of the output terminal of photoelectrical coupler 11, the second end ground connection of Transient Voltage Suppressor 28.
Transient Voltage Suppressor 28, in the time that the voltage of the negative pole output of the output terminal of photoelectrical coupler 11 is greater than setting voltage value, by the minus earth of the output terminal of photoelectrical coupler 11.
Concrete; by Transient Voltage Suppressor 28 is set, circuit is carried out to anti-overvoltage protection; in the time that the voltage of the negative pole output of the output terminal of photoelectrical coupler 11 is greater than setting voltage value; Transient Voltage Suppressor 28 short circuits; by the minus earth of the output terminal of photoelectrical coupler 11, to protect the safety of back-end circuit.
Further, this digital quantity output circuit 10 can also comprise: the first electric capacity 29, the second electric capacity 30, the 3rd electric capacity 31 and the 4th electric capacity 32.
The first end of the first electric capacity 29 is electrically connected with the first power supply 21, and the second end of the first electric capacity 29 is connected with the negative electricity of the input end of photoelectrical coupler 11.
The first end of the second electric capacity 30 is electrically connected with the positive pole of the input end of photoelectrical coupler 11, and the second end of the second electric capacity 30 is connected with the negative electricity of the input end of photoelectrical coupler 11.
The first end of the 3rd electric capacity 31 is connected with the negative electricity of the input end of photoelectrical coupler 11, the second end ground connection of the 3rd electric capacity 31.
The first end ground connection of the 4th electric capacity 32, the second end of the 4th electric capacity 32 is connected with the negative electricity of the output terminal of photoelectrical coupler 11.
The first electric capacity 29, the second electric capacity 30, the 3rd electric capacity 31 and the 4th electric capacity 32, for filtering.
Concrete, by multiple electric capacity is set, for the signal of circuit is carried out to filtering.The capacitance of the first electric capacity 29, the second electric capacity 30, the 3rd electric capacity 31 is specifically as follows 33pF, and the capacitance of the 4th electric capacity 32 is specifically as follows 0.1 μ F.
Further, this digital quantity output circuit 10 can also comprise: the second diode 33.
Stationary contact A12 electrical connection in the normally opened contact (A11, A12) of the positive pole of the second diode 33 and relay 12, the negative pole of the second diode 33 is electrically connected with controlled plant 15.
Concrete, because the second diode 33 has the effect of electric current one-way conduction, therefore can avoid to a certain extent from the large electric current of controlled plant 15, the high interference of electromagnetic field.
The digital quantity output circuit that the present embodiment provides, comprise the two-layer buffer circuit of photoelectrical coupler and relay, improve the isolation effect that the large electric current from outside controlled plant, strong-electromagnetic field are disturbed, improved the stability of digital output card communication performance, guaranteed train traffic safety.
The structural representation of the embodiment of digital output card that Fig. 3 provides for the utility model.As shown in Figure 3, this digital output card 40 specifically can comprise: CAN driving circuit 41, CPU (central processing unit) 13 and at least one digital quantity output circuit 10 as described in Fig. 1 or Fig. 2, wherein:
CAN driving circuit 41 is electrically connected with main control equipment 42 by CAN bus, and CPU (central processing unit) 13 is electrically connected with CAN driving circuit 41, and digital quantity output circuit 10 is electrically connected with power supply 14 and controlled plant 15 respectively.
CAN driving circuit 41, inputs to CPU (central processing unit) 13 for the control signal that main control equipment 42 is exported.
CPU (central processing unit) 13, for control signal is processed, and the first voltage signal that processing is obtained or second voltage signal are to digital quantity output circuit 10, to be switched on or switched off being electrically connected between power supply 14 and controlled plant 15.
Concrete, control signal is inputed to CAN driving circuit 41 by main control equipment 42, this control signal is inputed to CPU (central processing unit) 13 by CAN driving circuit 41, CPU (central processing unit) 13 is processed this control signal, and the first voltage signal that processing is obtained or second voltage signal input to digital quantity output circuit 10, to be switched on or switched off being electrically connected between power supply 14 and controlled plant 15.
Digital quantity output circuit in the digital output card that the present embodiment provides, comprise the two-layer buffer circuit of photoelectrical coupler and relay, improve the isolation effect that the large electric current from outside controlled plant, strong-electromagnetic field are disturbed, the stability that has improved digital output card communication performance, has guaranteed train traffic safety.
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of the each embodiment technical scheme of the utility model.
Claims (8)
1. a digital quantity output circuit, is characterized in that, comprising: photoelectrical coupler and relay, wherein:
Described photoelectrical coupler is electrically connected with CPU (central processing unit) and described relay respectively, and described relay is electrically connected with power supply and controlled plant respectively;
Described photoelectrical coupler, for conducting in the time receiving the first voltage signal of described CPU (central processing unit) input, so that described relay obtains is electric, and triggers the normally opened contact closure of described relay; And for ending in the time receiving the second voltage signal of described CPU (central processing unit) input, so that described relay electric-loss, and the described normally opened contact that triggers described relay disconnects;
Described relay, in the time that described normally opened contact is closed, connects the electrical connection between described power supply and described controlled plant, thinks that described controlled plant provides working power; And in the time that described normally opened contact disconnects, disconnect the electrical connection between described power supply and described controlled plant, to stop providing working power as described controlled plant.
2. digital quantity output circuit according to claim 1, is characterized in that, also comprises: the first power supply, the first pull-up resistor, second source and the second pull-up resistor;
The positive pole of the input end of described photoelectrical coupler is electrically connected with described the first power supply by described the first pull-up resistor, the negative pole of the input end of described photoelectrical coupler is electrically connected with described CPU (central processing unit), the positive pole of the output terminal of described photoelectrical coupler is electrically connected with described second source by described the second pull-up resistor, and the negative pole of the output terminal of described photoelectrical coupler is electrically connected with the positive pole of the coil of described relay; The minus earth of the coil of described relay, the moving contact in the described normally opened contact of described relay is electrically connected with described power supply, and the stationary contact in the described normally opened contact of described relay is electrically connected with controlled plant.
3. digital quantity output circuit according to claim 1 and 2, is characterized in that, also comprises: the first diode;
The plus earth of described the first diode, the negative pole of described the first diode is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described relay also for: in the time that described normally opened contact disconnects, to described the first diode discharge.
4. digital quantity output circuit according to claim 1 and 2, is characterized in that, also comprises: light emitting diode and divider resistance;
The positive pole of described light emitting diode is electrically connected with the first end of described divider resistance, the minus earth of described light emitting diode; The second end of described divider resistance is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described light emitting diode, for luminous when the described photoelectrical coupler conducting; And luminous for stopping in the time that described photoelectrical coupler ends;
Described divider resistance, the voltage of exporting for the negative pole of the output terminal to described photoelectrical coupler carries out dividing potential drop.
5. digital quantity output circuit according to claim 1 and 2, is characterized in that, also comprises: Transient Voltage Suppressor;
The first end of described Transient Voltage Suppressor is connected with the negative electricity of the output terminal of described photoelectrical coupler, the second end ground connection of described Transient Voltage Suppressor;
Described Transient Voltage Suppressor, in the time that the voltage of the negative pole output of the output terminal of described photoelectrical coupler is greater than setting voltage value, by the minus earth of the output terminal of described photoelectrical coupler.
6. digital quantity output circuit according to claim 2, is characterized in that, also comprises: the first electric capacity, the second electric capacity, the 3rd electric capacity and the 4th electric capacity;
The first end of described the first electric capacity is electrically connected with described the first power supply, and the second end of described the first electric capacity is connected with the negative electricity of the input end of described photoelectrical coupler;
The first end of described the second electric capacity is electrically connected with the positive pole of the input end of described photoelectrical coupler, and the second end of described the second electric capacity is connected with the negative electricity of the input end of described photoelectrical coupler;
The negative electricity of described the 3rd first end of electric capacity and the input end of described photoelectrical coupler is connected, the second end ground connection of described the 3rd electric capacity;
The first end ground connection of described the 4th electric capacity, the second end of described the 4th electric capacity is connected with the negative electricity of the output terminal of described photoelectrical coupler;
Described the first electric capacity, described the second electric capacity, described the 3rd electric capacity and described the 4th electric capacity, for filtering.
7. digital quantity output circuit according to claim 1 and 2, is characterized in that, also comprises: the second diode;
Stationary contact in the described normally opened contact of the positive pole of described the second diode and described relay is electrically connected, and the negative pole of described the second diode is electrically connected with described controlled plant.
8. a digital output card, is characterized in that, comprising: controller area network driving circuit, CPU (central processing unit) and at least one digital quantity output circuit as described in claim 1-7 any one, wherein:
Described CAN driving circuit is electrically connected with main control equipment by CAN bus, and described CPU (central processing unit) is electrically connected with described CAN driving circuit, and described digital quantity output circuit is electrically connected with power supply and controlled plant respectively;
Described CAN driving circuit, for inputing to described CPU (central processing unit) by the control signal of described main control equipment output;
Described CPU (central processing unit), for described control signal is processed, and the first voltage signal that processing is obtained or second voltage signal input to described digital quantity output circuit, to be switched on or switched off being electrically connected between described power supply and described controlled plant.
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CN201320808910.3U CN203643814U (en) | 2013-12-09 | 2013-12-09 | Digital quantity output circuit and digital quantity output board card |
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CN201320808910.3U CN203643814U (en) | 2013-12-09 | 2013-12-09 | Digital quantity output circuit and digital quantity output board card |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106130857A (en) * | 2016-08-26 | 2016-11-16 | 深圳市嘉泰智能股份有限公司 | Two-wire power supply and communication system and method |
CN113098489A (en) * | 2021-03-31 | 2021-07-09 | 苏州汇川技术有限公司 | Digital quantity output circuit, digital quantity output device and digital quantity output system |
CN114101617A (en) * | 2021-11-29 | 2022-03-01 | 广东韶钢松山股份有限公司 | Non-contact relay and metallurgical continuous casting machine |
-
2013
- 2013-12-09 CN CN201320808910.3U patent/CN203643814U/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106130857A (en) * | 2016-08-26 | 2016-11-16 | 深圳市嘉泰智能股份有限公司 | Two-wire power supply and communication system and method |
CN113098489A (en) * | 2021-03-31 | 2021-07-09 | 苏州汇川技术有限公司 | Digital quantity output circuit, digital quantity output device and digital quantity output system |
CN113098489B (en) * | 2021-03-31 | 2023-11-21 | 苏州汇川技术有限公司 | Digital quantity output circuit, digital quantity output device, and digital quantity output system |
CN114101617A (en) * | 2021-11-29 | 2022-03-01 | 广东韶钢松山股份有限公司 | Non-contact relay and metallurgical continuous casting machine |
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Address after: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Patentee after: CRRC DALIAN ELECTRIC TRACTION R & D CENTER CO., LTD. Address before: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Patentee before: Co., Ltd of Bei Che Dalian Electric Traction R & D Center |