CN216117915U - Signal machine simulation device based on railway system - Google Patents
Signal machine simulation device based on railway system Download PDFInfo
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- CN216117915U CN216117915U CN202122685153.2U CN202122685153U CN216117915U CN 216117915 U CN216117915 U CN 216117915U CN 202122685153 U CN202122685153 U CN 202122685153U CN 216117915 U CN216117915 U CN 216117915U
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Abstract
The utility model discloses a signaler simulation device based on a railway system, which simulates the wire breakage of a signal lamp by utilizing the disconnection of a relay, and simulates the lighting of the signal lamp by utilizing current signals generated by a plurality of current generation circuits when the relay is closed, so that the judgment of the lighting state of the signal lamp can be realized by the current and the wire breakage of the signal lamp can be simulated by utilizing the disconnection of the relay, thereby achieving the digital simulation function of the signal lamp.
Description
Technical Field
The utility model belongs to the technical field of railway system annunciator simulation, and particularly relates to an annunciator simulation device based on a railway system.
Background
The railway signal machine is a nervous system of a railway system, has very important function for ensuring the safe operation of a train, and a driver usually needs to drive the train to operate according to the signal machine, so that the normal display of the signal machine is one of important devices for ensuring the safe operation of the train; at present, after railway signal equipment is installed, a simulation interlocking test of a system must be carried out, so that the normal work of a signal machine is ensured, and the safe operation of a train is ensured.
At present, the simulation method of the signal generally connects a 220V/40W incandescent lamp as a load to a corresponding terminal on a distribution board, so that a filament relay is reliably excited, and the relevant signal is lighted by arranging a route, thereby achieving the purpose of checking whether a circuit normally operates, but the traditional simulation method has the following defects:
(1) a large number of incandescent lamps are complex to install, and need to be manually screwed off during a wire breakage test, so that time and labor are wasted, and the simulation efficiency is reduced; (2) the lamp can generate heat after being lighted for a long time, and if the heat dissipation is not good, the lamp cap or the mounting plate is easy to be burnt, so that certain potential safety hazard exists, and the standardized operation is not facilitated; (3) when the number of signal machines is large, a large number of incandescent lamps are needed, and the incandescent lamps and lamp sockets are not easy to recycle, so that the cost is increased; therefore, it is very desirable to provide a signal simulation apparatus with low cost, time and labor saving, high safety and high efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a railway system-based annunciator simulation device, which solves the problems of time and labor waste, low efficiency, potential safety hazard and high cost of the conventional simulation device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a signal machine simulation device based on a railway system, which comprises: the system comprises a main control module, a relay control module, a signal lamp lighting simulation module, a current acquisition module and a communication module;
the signal lamp lighting simulation module comprises a plurality of current generation circuits, the relay control module comprises a plurality of relays, the signal input end of the main control module is electrically connected with indoor equipment and used for receiving lighting signals transmitted by the indoor equipment, and the control end of the main control module is electrically connected with the controlled end of the relay control module and used for controlling the plurality of relays to be closed when the lighting signals are received;
the contact end of each relay in the plurality of relays is respectively electrically connected with a current generating circuit and used for enabling the corresponding current generating circuit to generate current when the relay is closed;
the acquisition end of the current acquisition module is respectively and electrically connected with the output end of each current generation circuit and is used for acquiring current signals on each current generation circuit;
the output end of the current acquisition module is in communication connection with the communication module through the main control module, and acquired current signals are transmitted to an upper computer through the communication module.
Based on the disclosure, the utility model utilizes the relay control module and the signal lamp lighting simulation module to realize the wire breaking and lighting simulation functions of the signal lamp, namely when the indoor equipment sends a lighting signal, the main control module controls a plurality of relays in the relay control module to be closed according to the lighting signal, so that a plurality of current generation circuits in the signal lamp lighting simulation module generate current signals, then the current signals on each current generation circuit are collected in real time by the current collection module and are uploaded to the upper computer, and finally, the lighting simulation of the signal lamp can be realized by judging the magnitude of the current; meanwhile, when the wire breakage of the signal lamp needs to be simulated, the upper computer sends a wire breakage instruction to the main control module through the communication module, the main control module controls the relay to be disconnected, at the moment, the current generation circuit does not generate a current signal, and therefore the wire breakage condition of the signal lamp can be judged.
Through the design, the utility model does not need to use an incandescent lamp, avoids the steps of installation and disassembly, saves time and labor, improves the simulation efficiency, reduces the cost, has no potential safety hazard of heating, and improves the use safety.
In one possible design, the relay control module further includes: the optical coupling isolation circuit and the relay drive circuit;
the control end of the main control module is respectively and electrically connected with the input end of the optical coupling isolation circuit, the output end of the optical coupling isolation circuit is electrically connected with the input end of the relay driving circuit, and one end of each relay coil in the plurality of relays is respectively and electrically connected with the output end of the relay driving circuit;
the other end of each relay coil is electrically connected with the anode of a first light-emitting diode, wherein the cathode of the first light-emitting diode is electrically connected with one end of the corresponding relay coil through a first resistor, and the other end of each relay coil is further electrically connected with a first direct-current power supply.
Based on the above disclosure, when the device is used specifically, the electrical isolation between the input end and the output end is realized through the optical coupling isolation circuit, so that the output signal has no influence on the input end, the anti-interference capability of the device is improved, and then the relay driving circuit is used for controlling the on-off of the relay, so that the lighting control and the wire breakage simulation of a signal lamp are realized.
In a possible design, the optical coupling isolation circuits are provided with 4, the relay driving circuits are provided with 2, wherein each two optical coupling isolation circuits correspond to one relay driving circuit, and the output end of each relay driving circuit is electrically connected with 8 relays respectively.
In one possible design, the optical coupling isolation circuit adopts an LTV-247 type optical coupling isolation chip, and the relay driving circuit adopts an ULN2803G-S18-R type driving chip.
In one possible design, each of the plurality of current generating circuits includes: the current collection device comprises a second resistor and a first capacitor which are connected in parallel, wherein a common connection end of the second resistor and the first capacitor is electrically connected with a contact end of a relay, and the other common connection end of the second resistor and the first capacitor is electrically connected with a collection end of the current collection module.
Based on the above disclosure, the principle of the current generation circuit is as follows: when the relay is closed, the second resistor and the first capacitor are connected with the first direct current power supply, so that a current signal is generated, and therefore, the lighting state of the signal lamp can be judged according to the current, for example, when the current value is 120-150 mA, the signal lamp can be judged to be in the lighting state.
In a possible design, the power supply module further comprises a voltage reduction circuit and an isolation circuit, wherein the input end of the voltage reduction circuit is electrically connected with the second direct current power supply, the output end of the voltage reduction circuit outputs 5V direct current voltage and is electrically connected with the input end of the isolation circuit, and the output end of the isolation circuit is electrically connected with the main control module and the power supply end of the communication module.
In one possible design, the voltage reduction circuit adopts XL2596S-50.E1 type voltage reduction chip and peripheral circuits thereof, and the isolation circuit adopts B0505S-1WR3 type isolation chip and peripheral circuits thereof.
In one possible design, the method further comprises: the power supply indicating module comprises a third resistor, a fourth resistor, a second light emitting diode, a third light emitting diode and a fourth light emitting diode;
one end of the third resistor is electrically connected with the second direct current power supply, and the other end of the third resistor is electrically connected with the anode of the second light-emitting diode;
one end of the fourth resistor is electrically connected with the second direct current power supply, the other end of the fourth resistor is electrically connected with the anode of the third light emitting diode and the cathode of the fourth light emitting diode respectively, and the cathode of the second light emitting diode, the cathode of the third light emitting diode and the anode of the fourth light emitting diode are grounded respectively.
Based on the above disclosure, by using a plurality of light emitting diodes to display the power state, the tester can conveniently master the working state of the power supply, thereby improving the convenience of use.
In one possible design, the main control module adopts an STM8S003K3T6C type processing chip and peripheral circuits thereof.
In one possible design, the communication module is an RS485 communication module.
The beneficial effects obtained by the utility model are as follows:
(1) the utility model does not need to use an incandescent lamp, avoids the steps of installation and disassembly, saves time and labor, improves the simulation efficiency, reduces the cost, has no potential safety hazard of heating, and improves the use safety.
Drawings
Fig. 1 is a control block diagram of a railway system-based traffic signal simulation apparatus provided in the present invention;
FIG. 2 is a specific circuit diagram of a master control module provided in the present invention;
fig. 3 is a circuit diagram of the connection between the first two optical coupling isolation circuits and a relay driving circuit in the 4 optical coupling isolation circuits provided by the utility model;
FIG. 4 is a specific circuit diagram of the first 8 relays of the 16 relays provided by the present invention;
fig. 5 is a circuit diagram of the connection between the last two optical coupling isolation circuits and another relay driving circuit in the 4 optical coupling isolation circuits provided by the utility model;
FIG. 6 is a specific circuit diagram of the last 8 relays of the 16 relays provided by the present invention;
fig. 7 is a specific circuit diagram of a signal lamp lighting simulation module provided in the present invention;
fig. 8 is a specific circuit diagram of a communication module provided in the present invention;
FIG. 9 is a detailed circuit diagram of the power module of the present invention;
FIG. 10 is a detailed circuit diagram of the power indication module provided by the present invention;
fig. 11 is an interface circuit diagram of the current collection module provided in the present invention.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the utility model. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Examples
As shown in fig. 1-11, the semaphore simulation device based on railway system that this embodiment provided, the broken filament of signal lamp is simulated through the disconnection that uses the relay, and when the relay was closed, utilize the current signal that a plurality of electric currents produced the circuit, come the light of simulation signal lamp, therefore, can realize the judgement of signal lamp lighting state through the electric current size, through the above-mentioned design, this device need not to use the incandescent lamp when the simulation, avoided installation and dismantlement step, not only labour saving and time saving, the simulation efficiency has been improved, and the cost is still reduced, and simultaneously, the potential safety hazard that does not have and generate heat, the security of use has been improved, be convenient for extensive popularization and application.
As shown in fig. 1, the railway system based signal simulation apparatus provided in the first aspect of this embodiment may include, but is not limited to: the utility model discloses a signal lamp, including the signal lamp, the signal lamp is lighted simulation module, current acquisition module and communication module, wherein, the signal lamp is lighted simulation module and is included a plurality of electric current generating circuit, and relay control module includes a plurality of relays, and this embodiment utilizes the relay to control whether a plurality of electric current generating circuit produce the electric current signal promptly to realize the simulation of signal lamp according to the electric current signal, simultaneously, the relay disconnection, the electric current generating circuit then does not have the electric current to produce, from this, the broken silk simulation of signal lamp is realized to usable relay.
Referring to fig. 1, in this embodiment, the lighting signal of the apparatus is issued by an indoor device, that is, the signal input end of the main control module is electrically connected to the indoor device so as to receive the lighting signal transmitted by the indoor device; meanwhile, the master control module can be connected to the distribution board through an interface, so that the indoor equipment is electrically connected by using the distribution board; in this embodiment, the indoor device mainly includes an interlock device, a coding device, an inter-block device, a signal centralized monitoring device, and the like, which are one of important components in the railway system and are a control core of signals in the railway system, and the interlock device in this embodiment implements an interlock test of the signal machine.
Referring to fig. 1, in this embodiment, a control end of the main control module is electrically connected to a controlled end of the relay control module, a contact end of each of the plurality of relays is electrically connected to a current generating circuit, an acquisition end of the current acquisition module is electrically connected to an output end of each current generating circuit, and an output end of the current acquisition module is communicatively connected to the communication module through the main control module; the working principle of each module is as follows: the main control module controls the plurality of relays to be closed when receiving the lighting signals, the relays are closed, the corresponding current generating circuits can generate currents, and finally, the current collecting module collects current signals on the current generating circuits and uploads the current signals to the upper computer, and therefore simulation and judgment of the lighting state of the signals can be achieved.
Similarly, when the signal lamp is required to be simulated to break, the upper computer sends a wire breaking instruction to the main control module through the communication module, the main control module can control the relay to be disconnected when receiving the instruction, and at the moment, no current signal is generated by the current generation circuit, so that the wire breaking condition of the signal lamp can be judged.
Therefore, through the detailed description of the annunciator simulation device, an incandescent lamp is not needed to be used in the simulation process, the installation and disassembly steps are avoided, time and labor are saved, the simulation efficiency is improved, the cost is reduced, meanwhile, the potential safety hazard of heating does not exist, and the use safety is improved.
In this embodiment, for example, when the current value of the current generating circuit reaches 120mA to 150mA, it can be determined that the corresponding signal lamp in the signal machine is turned on; preferably, when the current value reaches 140mA, it can be determined as lighting of the signal lamp, and of course, the magnitude of the current value can be modified by the machine-on position, and is not limited to 120mA to 150 mA.
In this embodiment, the exemplary main control module may adopt, but is not limited to, an STM8S003K3T6C type processing chip and its peripheral circuits, and a specific circuit diagram thereof can be seen in fig. 2; meanwhile, the communication module can be, but is not limited to, an RS485 communication module, and specifically, a TP8485E-SR communication chip and its peripheral circuits are used, and the specific circuits thereof can be seen in fig. 8.
Referring to fig. 3 to 6, one specific circuit of the relay control module is provided as follows:
in this embodiment, the relay control module may include, but is not limited to, in addition to the plurality of relays: the control end of the main control module is respectively and electrically connected with the input end of the optical coupling isolation circuit, the output end of the optical coupling isolation circuit is electrically connected with the input end of the relay driving circuit, and one end of each relay coil in the plurality of relays is respectively and electrically connected with the output end of the relay driving circuit; from this, can realize the electrical isolation of input and output through opto-coupler isolation circuit earlier for output signal does not have the influence to the input, thereby improves the interference killing feature of device, then recycles the switching that relay drive circuit comes control relay, thereby realizes the control of lighting and the simulation of disconnected silk of signal lamp.
Meanwhile, in the present embodiment, the other end of each relay coil is further electrically connected to a positive electrode of a first light emitting diode (i.e., LEDs 3-16 and LEDs 18 and 19 in fig. 3-6, which may be but is not limited to LTST-C171KGKT), wherein a negative electrode of the first light emitting diode is electrically connected to one end of the corresponding relay coil through a first resistor (i.e., resistors R17-R24 and R9-R16 in fig. 3-6), and the other end of each relay coil is further electrically connected to a first dc power supply (which may be but is not limited to 24V); therefore, the principle that the device realizes the signal lamp lighting simulation by utilizing the relay control module and the current generating circuit is as follows: after a lighting signal sent by indoor equipment is received, the main control module drives the relay to be closed through the relay driving circuit, so that the electric connection between each current generating circuit and the first direct-current power supply is switched on to generate a current signal, and finally, the judgment of whether the signal lamp is lighted or not can be realized through the magnitude of a current value in the current signal by acquiring the current signal and uploading the current signal to an upper computer; similarly, when the signal lamp is required to be simulated to be broken, the main control module receives a wire breaking instruction sent by the upper computer and controls the relay to be disconnected, so that the electric connection between the current generating circuit and the first direct current power supply is cut off, at the moment, no current is generated in the current generating circuit, and therefore the simulation of a wire breaking state can be realized, and certainly, the relay is closed and then is recovered to be lightened.
In this embodiment, for example, the optical coupling isolation circuit is provided with 4, the relay drive circuit is provided with 2, and the relay is provided with 16, see fig. 3-6 and show, divide into two sets with 16 relays equivalently, 8 relays of every group, and every two optical coupling isolation circuits correspond to have a relay drive circuit promptly, and 8 relays are then connected to the output of every relay drive circuit electricity respectively to the switching of 8 relays of control.
In this embodiment, for example, the optical coupling isolation circuit may be, but is not limited to, an LTV-247 type optical coupling isolation chip, the relay driving circuit may be, but is not limited to, an ULN2803G-S18-R type driving chip, and the type of the relay may be, but is not limited to, HF3FF/024-1ZS, as shown in fig. 3 to 6.
Referring to fig. 7, one specific structure of the current generation circuit is provided as follows:
in the present embodiment, each of the plurality of current generation circuits includes, for example: the current acquisition module comprises a second resistor and a first capacitor which are connected in parallel, wherein a common connection end of the second resistor and the first capacitor is electrically connected with a contact end of a relay, and the other common connection end of the second resistor and the first capacitor is electrically connected with an acquisition end of the current acquisition module; therefore, when the relay is closed, the simulation and judgment of the lighting state of the signal lamp can be realized by acquiring the current flowing through the second resistor in the corresponding current generating circuit.
In this embodiment, each current generating circuit is electrically connected to the current collecting module through an interface, and the interface circuit diagram of the current generating circuit is shown in fig. 11, and examples of the type of the current collecting module may include, but are not limited to: KHAQ-8I.
Therefore, through the detailed description of the relay module and the signal lamp lighting simulation module, the embodiment simulates the wire breaking of the signal lamp by utilizing the disconnection of the relay, and simulates the lighting of the signal lamp by utilizing the current signals generated by the plurality of current generation circuits when the relay is closed, so that the judgment of the lighting state of the signal lamp can be realized by the current magnitude, and the wire breaking of the signal lamp is simulated by utilizing the disconnection of the relay, thereby achieving the digital simulation function of the signal lamp.
Referring to fig. 9, a power supply module, specifically, a power supply module, is provided for the apparatus as follows:
in this embodiment, for example, the power module may include, but is not limited to, a voltage-reducing circuit and an isolation circuit, where an input end of the voltage-reducing circuit is electrically connected to a second dc power supply (also 24V, and the first dc power supply is the same as the second dc power supply), an output end of the voltage-reducing circuit outputs 5V dc voltage and is electrically connected to an input end of the isolation circuit, and an output end of the isolation circuit is electrically connected to power supply ends of the main control module and the communication module to supply power to the main control module and the communication module.
Referring to fig. 9, an example of the voltage reduction circuit may be, but is not limited to, XL2596S-50.E1 type voltage reduction chip and its peripheral circuit, and the isolation circuit may be, but is not limited to, B0505S-1WR3 type isolation chip and its peripheral circuit; therefore, the working principle of the power module is as follows: firstly, an XL 2596S-50E 1 type voltage reduction chip is used for reducing the 24V direct current voltage to 5V, and then a B0505S-1WR3 type isolation chip is used for realizing power isolation, so that the interference of a ground loop on the whole circuit system is eliminated.
In this embodiment, the power isolation is realized by using a B0505S-1WR3-C909795 type isolation chip, for example.
In addition, referring to fig. 10, in order to facilitate a tester to know a power supply state of the power module in real time, the embodiment further includes a power indication module, where the power indication module includes, for example, a third resistor, a fourth resistor, a second light emitting diode, a third light emitting diode, and a fourth light emitting diode, and the specific connection structure is as follows:
referring to fig. 10, one end of the third resistor (R1 in fig. 10) is electrically connected to the second dc power supply, the other end of the third resistor is electrically connected to the anode of the second light emitting diode (LED 55 in fig. 10), one end of the fourth resistor (R2 in fig. 10) is electrically connected to the second dc power supply, the other end of the fourth resistor is electrically connected to the anode of the third light emitting diode (LED 56 in fig. 10) and the cathode of the fourth light emitting diode (LED 57 in fig. 10), and the cathode of the second light emitting diode, the cathode of the third light emitting diode and the anode of the fourth light emitting diode are respectively grounded; through the design, the power state display is realized by the device through the plurality of light emitting diodes, so that the tester can conveniently master the working state of the power supply, and the use convenience is improved.
In this embodiment, the number of the relays, the optical isolator circuits, and the relay driving circuits may be specifically set according to practical use, and is not limited to the number exemplified in the foregoing embodiment.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A signal machine simulation device based on a railway system is characterized by comprising: the system comprises a main control module, a relay control module, a signal lamp lighting simulation module, a current acquisition module and a communication module;
the signal lamp lighting simulation module comprises a plurality of current generation circuits, the relay control module comprises a plurality of relays, the signal input end of the main control module is electrically connected with indoor equipment and used for receiving lighting signals transmitted by the indoor equipment, and the control end of the main control module is electrically connected with the controlled end of the relay control module and used for controlling the plurality of relays to be closed when the lighting signals are received;
the contact end of each relay in the plurality of relays is respectively electrically connected with a current generating circuit and used for enabling the corresponding current generating circuit to generate current when the relay is closed;
the acquisition end of the current acquisition module is respectively and electrically connected with the output end of each current generation circuit and is used for acquiring current signals on each current generation circuit;
the output end of the current acquisition module is in communication connection with the communication module through the main control module, and acquired current signals are transmitted to an upper computer through the communication module.
2. The railway system-based signal simulation apparatus of claim 1, wherein the relay control module further comprises: the optical coupling isolation circuit and the relay drive circuit;
the control end of the main control module is respectively and electrically connected with the input end of the optical coupling isolation circuit, the output end of the optical coupling isolation circuit is electrically connected with the input end of the relay driving circuit, and one end of each relay coil in the plurality of relays is respectively and electrically connected with the output end of the relay driving circuit;
the other end of each relay coil is electrically connected with the anode of a first light-emitting diode, wherein the cathode of the first light-emitting diode is electrically connected with one end of the corresponding relay coil through a first resistor, and the other end of each relay coil is further electrically connected with a first direct-current power supply.
3. The railway system-based signal simulation device as claimed in claim 2, wherein the number of the optical coupling isolation circuits is 4, the number of the relay driving circuits is 2, wherein each two optical coupling isolation circuits correspond to one relay driving circuit, and the output end of each relay driving circuit is electrically connected with 8 relays respectively.
4. The railway system based signal simulation device as claimed in claim 2, wherein the optical coupling isolation circuit adopts an LTV-247 type optical coupling isolation chip, and the relay driving circuit adopts an ULN2803G-S18-R type driving chip.
5. The railway system-based signal simulation apparatus according to claim 1, wherein each of the plurality of current generation circuits comprises: the current collection device comprises a second resistor and a first capacitor which are connected in parallel, wherein a common connection end of the second resistor and the first capacitor is electrically connected with a contact end of a relay, and the other common connection end of the second resistor and the first capacitor is electrically connected with a collection end of the current collection module.
6. The railway system-based signal simulation device according to claim 1, further comprising a power module, wherein the power module comprises a voltage reduction circuit and an isolation circuit, wherein an input terminal of the voltage reduction circuit is electrically connected to the second dc power supply, an output terminal of the voltage reduction circuit outputs a 5V dc voltage and is electrically connected to an input terminal of the isolation circuit, and an output terminal of the isolation circuit is electrically connected to power supply terminals of the main control module and the communication module.
7. The railway system-based traffic signal simulator of claim 6, wherein the voltage reduction circuit employs XL2596S-50.E1 type voltage reduction chip and its peripheral circuit, and the isolation circuit employs B0505S-1WR3 type isolation chip and its peripheral circuit.
8. The railway system-based signal simulation apparatus of claim 6, further comprising: the power supply indicating module comprises a third resistor, a fourth resistor, a second light emitting diode, a third light emitting diode and a fourth light emitting diode;
one end of the third resistor is electrically connected with the second direct current power supply, and the other end of the third resistor is electrically connected with the anode of the second light-emitting diode;
one end of the fourth resistor is electrically connected with the second direct current power supply, the other end of the fourth resistor is electrically connected with the anode of the third light emitting diode and the cathode of the fourth light emitting diode respectively, and the cathode of the second light emitting diode, the cathode of the third light emitting diode and the anode of the fourth light emitting diode are grounded respectively.
9. The railway system-based signal simulation device as claimed in claim 1, wherein the main control module employs an STM8S003K3T6C type processing chip and its peripheral circuits.
10. The railway system based signal simulation device as claimed in claim 1, wherein the communication module is an RS485 communication module.
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| CN202122685153.2U CN216117915U (en) | 2021-11-04 | 2021-11-04 | Signal machine simulation device based on railway system |
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| CN202122685153.2U CN216117915U (en) | 2021-11-04 | 2021-11-04 | Signal machine simulation device based on railway system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852128A (en) * | 2022-03-31 | 2022-08-05 | 浙江众合科技股份有限公司 | Method for automatically configuring current value of interlocking equipment annunciator |
| CN114910727A (en) * | 2022-05-13 | 2022-08-16 | 中铁电气化局集团有限公司 | Double-voltage self-adaptive signal acquisition device for railway signal machine |
-
2021
- 2021-11-04 CN CN202122685153.2U patent/CN216117915U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114852128A (en) * | 2022-03-31 | 2022-08-05 | 浙江众合科技股份有限公司 | Method for automatically configuring current value of interlocking equipment annunciator |
| CN114910727A (en) * | 2022-05-13 | 2022-08-16 | 中铁电气化局集团有限公司 | Double-voltage self-adaptive signal acquisition device for railway signal machine |
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