CN202937106U - Safety circuit of vehicle door - Google Patents
Safety circuit of vehicle door Download PDFInfo
- Publication number
- CN202937106U CN202937106U CN2012204076576U CN201220407657U CN202937106U CN 202937106 U CN202937106 U CN 202937106U CN 2012204076576 U CN2012204076576 U CN 2012204076576U CN 201220407657 U CN201220407657 U CN 201220407657U CN 202937106 U CN202937106 U CN 202937106U
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- car door
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Abstract
The utility model provides a safety circuit of a vehicle door. The safety circuit of the vehicle door comprises a relay and at least a vehicle door controller, wherein the vehicle door controllers are distributed in at least a carriage and used for controlling the vehicle door to be opened and closed and the relay is in series connection with the vehicle door controllers.
Description
Technical field
The utility model relates to the city rail vehicle technical field, particularly a kind of car door safety return circuit.
Background technology
Urban track traffic is played key effect referred to as the city rail always in the middle of a lot of large size cities.This noun covering scope of urban track traffic is very extensive, of a great variety; Comprise city railway, suburban railway, underground railway, light rail transit, urban tram, monorail traffic, magnetic suspension circuit, airport contact railway, new traffic system etc.Most city rail traffics with electric power as the energy, so city rail traffic have energy-conservation, economize that ground, freight volume are large, round-the-clock, pollution-free (or of low pollution) advantage such as safety again, belong to the environmental protection railway and highway system, meet the principle of sustainable development.And as its name suggests, city rail traffic is namely the mode of transportation of moving on vehicle and track, thus basically can not be subject to the impact of traffic congestion, so in traffic pressure heavy metropolis, it is more fast efficient that it compares mechanical transport.And along with the progress of each side technology, city rail traffic also to safer, direction is constantly perfect faster, brings larger convenience for the civic trip as much as possible.Especially at the secure context of city rail vehicle, more become the problems of concern of passenger.
City rail vehicle must guarantee that all car doors are in closure state, need car door opening again at bus stop under steam.If the switch of car door goes wrong, the situation that car door can't normally be opened or normally close occurs, the impact for safety will be especially severe so.So all be provided with the car door safety return circuit in the middle of present stage nearly all city rail vehicle, whether be in closed condition in order to detect each car door, in time find the situation that car door is not normally closed because of some fault, the situation exit door safety return circuit of not closing at car door can also carry out tractive force and block, and stops vehicle in the situation that car door is not closed travels.
So-called car door safety return circuit namely arranges a car door controller at each car door place, and the car door controller is connected in the middle of the loop of certain structure, has namely consisted of the car door safety return circuit.The car door safety return circuit that present stage extensively adopts is mainly a kind of loop of secondary structure, namely first take the single-unit compartment as unit, every joint compartment utilize a relay to connect all car door controllers consist of a subordinate loop in this compartment; And then the contact of all subordinate's loop relays of connecting consists of the upper circuit that covers whole city rail vehicle.When having car door situation that car door normally do not close because of some fault to occur in certain subordinate loop, the current potential of the car door controller that arranges on this car door can change, and affects the subordinate loop at its place, and then has influence on upper circuit by series relationship again; The system of Train Control management just can detect this train has car door not yet to close.
But owing to comprising a plurality of relays in the middle of above-mentioned secondary circuit, and relay itself just belongs to the device that is prone to fault, has the probability of the fault that more increases in the time of a plurality of relay.So above-mentioned car door safety return circuit structure is too complicated, stability is relative with safety relatively poor.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of car door safety return circuit, described car door safety return circuit adopts single step arrangement directly the car door controller to be connected, thereby reduced the quantity of relay, improve stability and the safety of car door safety return circuit, simplified the structure of car door safety return circuit.
For achieving the above object, the utility model has following technical scheme:
A kind of car door safety return circuit, described car door safety return circuit comprises; A relay, at least one car door controller; Described car door controller is distributed at least one compartment, is used for controlling car door opening and closing; Described relay is connected with the car door controller.
Described car door safety return circuit also comprises:
The car door administration module is used to the car door controller to send corresponding supply side information, coach number information and car door information, and the fault that reception car door controller sends is declared information.
Described car door controller specifically comprises:
The control circuit unit is used for controlling the opening and closing of car door;
Detecting unit is used for determining the conventional signal of telecommunication of control circuit unit according to described supply side information, and judges whether the current signal of telecommunication in control circuit unit is consistent with the conventional signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect;
The fault message unit is used for generating fault and declares information when the signal of telecommunication is incorrect, described coach number information and car door information Write fault are declared information.
The current signal of telecommunication in described control circuit unit comprises first signal of telecommunication and second signal of telecommunication, and described control circuit unit comprises:
The first switch contact is used for generating first signal of telecommunication, and by network, first signal of telecommunication is sent to detecting unit;
The second switch contact is used for generating second signal of telecommunication, and by circuit, second signal of telecommunication is sent to detecting unit.
Described detecting unit also is used for:
Detect first signal of telecommunication whether consistent with second signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect.
Also comprise in described car door safety return circuit:
Display is used for when the car door administration module receives that fault is declared information, and the demonstration fault is declared coach number information and the car door information in information.
Described car door safety return circuit also comprises:
Communication unit is used for collecting fault and declares information, and the fault information of declaring is sent to the car door administration module.
Described car door safety return circuit also comprises:
Isolating switch be used for sealing fault car door, and prompt system is ignored this car door fault.
According to above technical scheme as can be known, the beneficial effect that the utility model exists is, the car door controller series connection of full car is become the car door safety return circuit of a single-stage, and utilize a relay that whole piece car door safety return circuit is controlled, realized thus simplifying the structure of car door safety return circuit, reduce the quantity of relay, improved stability and the safety of car door safety return circuit integral body; In addition, the utility model adds the car door controller that can feed back the car door positional information in the middle of described car door safety return circuit, avoided in the situation that car door breaks down the situation that can't lock abort situation that too much causes due to car door amount controller in the car door safety return circuit.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the described car door safety return circuit of the utility model embodiment structural representation;
Fig. 2 is the described car door safety return circuit of another embodiment of the utility model structural representation;
Fig. 3 is car door controller architecture schematic diagram described in the utility model;
Fig. 4 is car door controller described in the utility model is connected into the car door safety return circuit in the compartment structural representation.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
With reference to Figure 1 shows that the disclosed specific embodiment of car door safety return circuit described in the utility model.
In the present embodiment, described car door safety return circuit comprises a relay and at least one car door controller.General each car door place is provided with a car door controller in city rail vehicle, is used for controlling the opening and closing of car door, and also whether the switch for detection of car door exists fault, so the quantity of car door controller often equals the quantity of car door; And relay is the conventional components and parts in circuit, is used for whole circuit is carried out control and protection.
In the middle of traditional car door safety return circuit structure, be often structure subordinate of unit safety return circuit take the compartment, then the upper circuit of the whole city rail vehicle of all subordinate's loops formation coverings of connecting, in each subordinate's safety return circuit, a relay must be set.Described car door controller can be both the car door controller of different car doors in same compartment in the present embodiment, it can be also the car door controller that is distributed in different compartments, in the described car door safety return circuit of utility model, directly car door controllers all in the middle of relay and train is connected, namely the two-layer configuration with the traditional vehicle door safety circuit changes single step arrangement into; No matter whether the car door controller is in same compartment, and what all be unified is connected in a car door safety return circuit.And because all car door controllers are directly connected, so the safety return circuit of car door described in the present embodiment only just can be realized control and protection to circuit with a relay.
For other devices in the car door safety return circuit, the fault rate of relay is higher, if the quantity of whole circuit relay electrical equipment reduces, and the decline that the probability that breaks down so also can be at double.So the beneficial effect that the present embodiment exists is that the structure by simplification car door safety return circuit has reduced the quantity of relay, thereby reduced the probability that described car door safety return circuit breaks down, and has improved stability and the safety of car door safety return circuit.
Embodiment is only a basic embodiment of car door safety return circuit described in the utility model as shown in Figure 1, although its technical scheme can realize reducing the beneficial effect of probability of malfunction, exists to a certain extent imperfection; With reference to shown in Figure 2, be another specific embodiment of car door safety return circuit described in the utility model; Embodiment shown in Figure 2 is the further optimization for its technical scheme.
For the car door safety return circuit, its function also needs to realize in time to carry out fault and declares except controlling the opening and closing of car door when car door breaks down.But traditional car door controller does not feed back the information of any identification when declaring fault, so it is indiscriminate that fault is declared in process each car door controller of connecting in a safety return circuit, the system that responsible handling failure is declared can't directly lock the position that fault occurs.In existing secondary safety return circuit, subordinate's safety return circuit take by the compartment as unit, so just can learn when fault is declared fault comes from which concrete subordinate loop, also just fault coverage can be determined in the compartment that this subordinate loop covers the scope of having dwindled to a certain extent trouble shoot.And for car door safety return circuit described in the utility model, if utilizing the traditional vehicle door controller to carry out fault declares, fault may come from any one car door of train, and the maintainer has to all car doors are checked one time successively.If in train, car door quantity is more, locks so abort situation and just must consume a large amount of manpowers and time, for the maintenance of fault has brought serious difficulty.So under the many application scenarios of car door quantity, the value that does not possess practical application embodiment illustrated in fig. 1.
The safety return circuit of car door described in the present embodiment has overcome defects by the optimization for described car door controller, and specifically with reference to Fig. 2, the safety return circuit of car door described in the present embodiment comprises:
The car door administration module is used to each car door controller to send corresponding coach number information and car door information, and the fault that reception car door controller sends is declared information;
Be based on described car door administration module Train Control and management system (Train Control and Management System is called for short TCMS) realize; Also comprise monitoring air-conditioning, traction, braking, the control of high-speed circuit breaker condition monitoring etc. outside the management of the function treatment car door of TCMS in the city rail vehicle of present stage, but in the utility model, only be applied to the partial function that TCMS only relates to the car door management.Described car door administration module plays the effect of control and management effect to the car door controller; The car door administration module comprises to the information that the car door controller sends corresponding coach number information and the car door information of car door that this car door controller is controlled.Coach number information and car door information have namely been indicated compartment and the numbering of this car door in this compartment at the car door place that this car door controller is corresponding, have namely directly determined the position of some car doors.
The car door controller is used for controlling the opening and closing of car door; And when there is fault in car door, coach number information and car door information Write fault are declared information, the fault information of declaring is sent to the car door administration module.
The controller of car door described in the present embodiment is written to fault with the coach number information that receives before and car door information and declares in the middle of information when generating fault and declaring information; This step is also to realize abort situation is directly locked onto the key step of concrete a certain car door.Aforesaid car door administration module sends coach number information and car door information provides necessary prerequisite to this link of car door controller for this step.The car door administration module receives the fault that comprises coach number information and car door information and declares information, just can determine directly specifically fault has appearred in which car door in which compartment.
The safety return circuit of car door described in the present embodiment comprises a relay equally, its function is with embodiment illustrated in fig. 1 identical, the safety return circuit of car door described in the present embodiment is taked equally with embodiment illustrated in fig. 1 consistent, the single step arrangement of directly car door controllers all in the middle of relay and train being connected.Do not make repeated description at this.
The safety return circuit of car door described in the present embodiment can also comprise display, is used for when the car door administration module receives that fault is declared information, and the demonstration fault is declared coach number information and the car door information in information.
In the present embodiment, be coach number information and the car door information that the car door controller sends the car door that this car door controller controls by the car door administration module; When described car door controller feedback fault is declared information, corresponding coach number information and car door information Write fault are declared in information.So when described car door administration module is declared information in the reception fault, just can directly determine the position of fault car door.Thus, pass through the optimization to described car door controller in the present embodiment, make the car door controller feed back the car door position when fault is declared, avoided described car door safety return circuit in the situation that car door quantity is many, the locking abort situation just must consume a large amount of manpowers and the defective of time, make the technical scheme of described car door safety return circuit more complete, can be applied in widely under various application scenarios.
In the present embodiment, described car door controller is not made concrete restriction, every car door controller that can possess similar functions all can be applied under the overall technical architecture of the present embodiment.But, openly more abundant in order to make technical solutions of the utility model, enumerated a kind of car door controller that can realize function described in the present embodiment once.In the present embodiment, available car door controller includes but are not limited to door controller once get off.
With reference to Figure 3 shows that a kind of selectable car door controller in car door safety return circuit described in the utility model.The structure of described car door controller specifically comprises as shown in Figure 3:
The control circuit unit is used for controlling the opening and closing of car door;
Described control circuit unit is to realize car door controller traditional function, namely controls the functional unit of door contact interrupter; And the signal of telecommunication of the described fault basis for estimation signal of telecommunication in the control circuit unit namely.
The current signal of telecommunication in control circuit unit comprises first signal of telecommunication and second signal of telecommunication; And control circuit described in the present embodiment unit comprises:
The first switch contact is used for generating first signal of telecommunication, and by network, first signal of telecommunication is sent to detecting unit;
The second switch contact is used for generating second signal of telecommunication, and by circuit, second signal of telecommunication is sent to detecting unit;
Above-mentioned two contact switch are all closed when door closing, disconnect in the car door opening formula; And the signal of telecommunication changes when opening and disconnect.Difference is that described the first switch contact sends the signal of telecommunication by network, and the second switch contact sends the signal of telecommunication by circuit; Two pairs of contact concurrent workings, and only have when the two pairs of contacts and show that all in the situation that car door normally closes, train can be exercised, so in the present embodiment, the setting of two pairs of contacts is a kind of means that increase vehicle safety.
In addition, described second switch contact is linked in the middle of pulliung circuit, in the situation that the second switch contact is not closed, pulliung circuit disconnects, and has just realized that also so-called tractive force blocks, and does not namely stop train driving in the situation that car door is closed.
Detecting unit is used for determining the conventional signal of telecommunication of control circuit unit according to described supply side information, and judges whether the current signal of telecommunication in control circuit unit is consistent with the conventional signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect; Whether detecting unit is also consistent with second signal of telecommunication for detection of first signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect.
In the train driving process, drivers' cab one end that is used is called and occupies end; Because general city rail vehicle is all two way, two ends are equipped with a drivers' cab, drive in the drivers' cab that the driver (follows into direction) forwardly in the process of moving; The drivers' cab in described the place ahead just is called as and occupies end.City rail vehicle described in the present embodiment is chosen in a non-end that occupies and provides power supply for described door control system, and general city rail vehicle two ends are symmetrical in other words, can occupy or power; Actual middle employing one end that travels occupies the setting of other end power supply.Described supply side information is exactly to have shown the information of occupying end and feeder ear position.And occupy due to an end under the pattern of other end power supply, the signal of telecommunication flows to by feeder ear and occupies end, so the car door controller can be determined theoretic signal of telecommunication situation in self circuit according to the position of feeder ear.If but break down when this car door, cause car door can't normal switch the time, will cause signal of telecommunication situation and the theoretic signal of telecommunication in the car door controller inconsistent.In a single day the car door controller detects this inconsistent situation and thinks that namely this car door breaks down.Detecting unit can be determined the theoretic signal of telecommunication in the control circuit unit according to the position of feeder ear, with this theoretic signal of telecommunication as the conventional signal of telecommunication.
With reference to Fig. 4, Fig. 4 is described car door controller is connected into the car door safety return circuit in the compartment structural representation.Occupy when vehicle A holds, during the power supply of B end, the signal of telecommunication flows to A from B, passes through each car door controller midway.Input and the output of described control circuit unit also adopt symmetric design, when the signal of telecommunication flows to A from B, and all control circuit unit port one inputs, port 2 outputs.If opposite when the train inverted running, be the power supply of A end, the B end occupies, and the input of control circuit unit and output also can be put upside down thereupon so, change port one output into, port 2 inputs.Occupy with the end of vehicle A only in the present embodiment, the situation of B end power supply describes.
In actual motion, the on off state of car door is divided into closed condition and opening.Occupy when vehicle A holds, B holds power supply; The port one input of control circuit unit, port 2 outputs; Described the first switch contact and second switch contact are the equal of just two switches on the control circuit unit, and two pairs of contacts connect when closing of the door, and the signal of telecommunication can conducting, is two pairs of contact separation at car door opening, and the signal of telecommunication can't conducting; In theory just can be understood as, during car door opening, control circuit at car door everywhere in off-state, not conducting of electric current, the input current potential is higher than the output current potential; Work as closing of the door, control circuit at car door everywhere in closure state, current lead-through, the input current potential equals the output current potential.
So in above-mentioned situation, the conventional signal of telecommunication is specially:
The A end occupies, in the situation of B end power supply; Working as car door opening, the port one current potential is higher than port 2 current potentials; Work as closing of the door, the port one current potential equals port 2 current potentials.
Detecting unit detects the port one of control circuit unit and the current potential of port 2 according to above criterion; If the signal of telecommunication that records is consistent with the situation of the conventional signal of telecommunication, the car door normal operation that this car door controller is controlled is described; Unlatching or closed condition that this car door is described if situation is inconsistent exist extremely, and detecting unit thinks that namely the signal of telecommunication is incorrect.
In addition, described detecting unit can also judge whether first signal of telecommunication is consistent with second signal of telecommunication, on theory, the content of two signal of telecommunication feedbacks must be consistent, but if there is in inconsistent situations both, just illustrate that also certain fault has appearred in this car door place or network breaks down, detecting unit thinks equally that at this moment the signal of telecommunication is incorrect, begins follow-up fault and declares.
The fault message unit is used for generating fault and declares information when the signal of telecommunication is incorrect, described coach number information and car door information Write fault are declared information;
The unit of fault message described in the present embodiment is to realize that fault detect is accurate to the functional unit of concrete car door.In the present embodiment, each car door has the car door controller of a correspondence, and the particular location of this car door that coach number information and car door information are indicated.Information is declared with coach number information and the car door information Write fault of the car door that this car door controller is controlled in described fault message unit, by this fault information of declaring can be concrete the car door position of clearly breaking down.
Communication unit is used for collecting fault and declares information, and the fault information of declaring is sent to the car door administration module;
In real time, described car door controller is main gating device and from two kinds of general names that are used for the device of close door of gating device.Described main gating device just is whether can complete communicating by letter in described car door administration module with difference from gating device; Namely be whether be provided with communication unit.In general for a joint compartment, as long as be provided with a main gating device, can realize collecting in whole compartment the fault in all car door controllers and declare information, and be sent to the car door administration module.So under the practical application scene, there is no need for each car door controller, communication unit to be set, in one saves the compartment, two main gating devices are set in the present embodiment, wherein be responsible for communicating with the car door administration module under regular situation for one, another is redundance unit, as standby.
Isolating switch be used for sealing fault car door, and prompt system is ignored this car door fault.
In the situation that determined that there is fault in a certain car door, due to the restriction of some condition in actual motion, not necessarily can complete maintenance for the fault car door in the very first time.If but do not do any type of processing, according to the security mechanism of general vehicle, in the situation that certain car door place exists the fault vehicle can not continue to move.And the effect of isolating switch is, after definite a certain car door breaks down, just utilizes isolating switch with the isolation of fault car door, makes system ignore this fault and does not affect train continuation operation.
Car door controller according to technique scheme design is placed under overall plan embodiment illustrated in fig. 2, just can realize the function of being correlated with in embodiment illustrated in fig. 2.Need to prove, only comparatively preferably a kind of in the described car door safety return circuit take the entrance door controller, be not limited only to select the car door controller of the type in the middle of practical application.
The above is only preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a car door safety return circuit, is characterized in that, described car door safety return circuit comprises; A relay, at least one car door controller; Described car door controller is distributed at least one compartment, is used for controlling car door opening and closing; Described relay is connected with the car door controller.
2. car door safety return circuit according to claim 1, is characterized in that, described car door controller specifically comprises:
The control circuit unit is used for controlling the opening and closing of car door;
Detecting unit is used for determining the conventional signal of telecommunication of control circuit unit according to supply side information, and judges whether the current signal of telecommunication in control circuit unit is consistent with the conventional signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect;
The fault message unit is used for generating fault and declares information when the signal of telecommunication is incorrect, coach number information and car door information Write fault are declared information.
3. car door safety return circuit according to claim 2, is characterized in that, the current signal of telecommunication in described control circuit unit comprises first signal of telecommunication and second signal of telecommunication, and described control circuit unit comprises:
The first switch contact is used for generating first signal of telecommunication, and by network, first signal of telecommunication is sent to detecting unit;
The second switch contact is used for generating second signal of telecommunication, and by circuit, second signal of telecommunication is sent to detecting unit.
4. car door safety return circuit according to claim 3, is characterized in that, described detecting unit also is used for:
Detect first signal of telecommunication whether consistent with second signal of telecommunication, if inconsistent think that the signal of telecommunication is incorrect.
5. the described car door safety return circuit of any one according to claim 1-4, is characterized in that, also comprises in described car door safety return circuit:
Display is used for when receiving that fault is declared information, and the demonstration fault is declared coach number information and the car door information in information.
6. the described car door safety return circuit of any one according to claim 1-4, is characterized in that, described car door safety return circuit also comprises:
Communication unit is used for collecting fault and declares information, and the fault information of declaring is sent.
7. the described car door safety return circuit of any one according to claim 1-4, is characterized in that, described car door safety return circuit also comprises:
Isolating switch be used for sealing fault car door, and prompt system is ignored this car door fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204076576U CN202937106U (en) | 2012-08-16 | 2012-08-16 | Safety circuit of vehicle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204076576U CN202937106U (en) | 2012-08-16 | 2012-08-16 | Safety circuit of vehicle door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937106U true CN202937106U (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204076576U Expired - Lifetime CN202937106U (en) | 2012-08-16 | 2012-08-16 | Safety circuit of vehicle door |
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| Country | Link |
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| CN (1) | CN202937106U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808558A (en) * | 2012-08-16 | 2012-12-05 | 南车株洲电力机车有限公司 | Safe loop of vehicle door |
| CN104097646A (en) * | 2014-06-30 | 2014-10-15 | 中国北车集团大连机车车辆有限公司 | Door control method for tramcar |
| CN105652191A (en) * | 2015-12-11 | 2016-06-08 | 重庆川仪自动化股份有限公司 | Safety loop state monitoring system |
| CN112901010A (en) * | 2021-03-17 | 2021-06-04 | 南京康尼电子科技有限公司 | Train door control network communication system |
-
2012
- 2012-08-16 CN CN2012204076576U patent/CN202937106U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808558A (en) * | 2012-08-16 | 2012-12-05 | 南车株洲电力机车有限公司 | Safe loop of vehicle door |
| CN102808558B (en) * | 2012-08-16 | 2015-05-20 | 南车株洲电力机车有限公司 | Safe loop of vehicle door |
| CN104097646A (en) * | 2014-06-30 | 2014-10-15 | 中国北车集团大连机车车辆有限公司 | Door control method for tramcar |
| CN105652191A (en) * | 2015-12-11 | 2016-06-08 | 重庆川仪自动化股份有限公司 | Safety loop state monitoring system |
| CN105652191B (en) * | 2015-12-11 | 2019-01-08 | 重庆川仪自动化股份有限公司 | A kind of safety return circuit condition monitoring system |
| CN112901010A (en) * | 2021-03-17 | 2021-06-04 | 南京康尼电子科技有限公司 | Train door control network communication system |
| CN112901010B (en) * | 2021-03-17 | 2022-09-20 | 南京康尼电子科技有限公司 | Train door control network communication system |
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