CN105720548A - Switching device - Google Patents
Switching device Download PDFInfo
- Publication number
- CN105720548A CN105720548A CN201510947382.3A CN201510947382A CN105720548A CN 105720548 A CN105720548 A CN 105720548A CN 201510947382 A CN201510947382 A CN 201510947382A CN 105720548 A CN105720548 A CN 105720548A
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- CN
- China
- Prior art keywords
- relay
- switching device
- reed relay
- magnetic flux
- current value
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
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- Relay Circuits (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a switching device. The switching device has a plurality of relays (1, 2) which are connected when a set condition is set up, and supply the input to a downstream side. The switching device is characterized in that the plurality of relays are configured for generating magnetic fluxes (phi1 and phi2) in different directions for operational coils. When the interference (phiA) which makes the operational coil generate currents flows in, the current value generated by at least one operational coil is less than the current value when the relays are connected. When the interference flows in, at least one relay is not connected, thus the switching device is not connected, and the input supply to the downstream side is cut off. When the relays of the plurality of common products use a multiple structure, common reason faults are suppressed, and the safety is ensured and the miniaturization and low price are realized.
Description
Technical field
The present invention relates to for the switching device to the circuit or unit feeding power supply or signal that to realize various function.
Background technology
In this switching device, for instance use relay to carry out the supply/stopping of Switching power or signal.But, it is impossible to the relay getting rid of the universal product produces the probability of malfunction because of interference, it is impossible to be applied to require the system of high security.
Therefore, in railway signaling system, adopt the relay of the structure of strong interference immunity and so-called signal relay.Signal relay is not only not easily susceptible to the impact of interference, also such as disclosed as Japanese Patent Publication 2012-138867, is controlled to secure side when fault produces.Therefore, the circuit in downstream or device receive power supply or signal means to be equipped with the hardware of the system of switching device or software normally carries out action, it is possible to ensure safety.
But, for instance described as Japanese Patent Publication 2007-62483, due to signal relay large and expensive, therefore use the product of this signal relay or system to also have to large and expensive.
Summary of the invention
Therefore, it is an object of the invention to, it is provided that a kind of switching device, it suppresses to guarantee safety because disturbing the malfunction caused, and realizes miniaturization and low price.
In order to reach above-mentioned purpose, the switching device of the present invention has multiple relay, the plurality of relay carries out when the condition of regulation is set up connecting work in the lump, and input is supplied to downstream, this switching device is characterised by, the plurality of relay is configured to generate the connection of each operation coils from parallel connection of coils the magnetic flux of different directions, and the outfan of each relay is connected in series, when having flowed into the interference making operation coil generation electric current, current value produced by least one operation coil carries out connecting current value during work less than described relay.
According to the present invention, when having flowed into the interference making operation coil generation electric current, at least one relay will not carry out connecting work, and cuts off the input supply that downstream is carried out.Thereby, it is possible to suppress multiple relay that the public cause trouble of error of performance occurs under identical pattern because of interference.So, by making multiple relay become multiple inverter configuration, and suppress switching device guarantee safety because disturbing the malfunction caused, and realize miniaturization and low price.
Accompanying drawing explanation
Figure 1A is the axonometric chart of the schematic configuration example of the switching device illustrating embodiments of the present invention.
The schematic diagram of the duty of 2 reed relay (reedrelay) Figure 1B is to have flowed into magnetic flux from outside.
Fig. 2 A is the sectional view along the X-X ' line in the switching device shown in Figure 1A.
Fig. 2 B is the sectional view along the Y-Y ' line in the switching device shown in Figure 1A.
Fig. 3 is the circuit diagram of the circuit structure example illustrating each reed relay in the switching device shown in Figure 1A, Fig. 2 A and Fig. 2 B.
Fig. 4 A, for the circuit structure of the switching device shown in Figure 1A, Fig. 2 A and Fig. 2 B is described, is the schematic diagram of the relation of the input illustrating 2 reed relay.
Fig. 4 B, for the circuit structure of the switching device shown in Figure 1A, Fig. 2 A and Fig. 2 B is described, is the schematic diagram of the relation of the output illustrating 2 reed relay.
Fig. 5 is the block diagram of the structure example of the power supply system being shown with the switching device shown in Figure 1A, Fig. 2 A and Fig. 2 B.
Fig. 6 is the axonometric chart of the variation illustrating the switching device shown in Fig. 1.
Detailed description of the invention
As shown in Figure 1A, the switching device of present embodiment is configured to comprise the relay of multiple universal product, such as reed relay 1,2 and printed wiring board (PWB:PrintedWiringBoard) 3.Reed relay 1,2 is installed in the way of relative with two faces (front and back) across printed wiring board 3.These reed relay 1,2 are configured to the magnetic flux making each operation coil generate different directions, and the angle that magnetic flux the φ 1 and φ 2 that operation coil generates is formed is 180 degree.In other words, reed relay 1,2 operation coil central shaft be equidirectional, and each operation coil generate magnetic flux φ 1, φ 2 direction be rightabout.
In such an arrangement, when having flowed into the interference of the operation coil generation electric current making reed relay 1,2, such as having flowed into magnetic flux φ A from outside as shown in arrow, magnetic field applies to same direction.Thus, in the magnetic flux traverse when N side the reed relay for a side, and for the magnetic flux traverse when S side the reed relay of the opposing party.Its result is, the action even if a side makes a mistake, and the opposing party also can be operating normally, thus both sides can not be also turned on.
Figure 1B schematically shows this state.Illustrate in this example because the inflow of magnetic flux φ A causes that the contact short circuit of reed relay 1 and the contact of reed relay 2 maintain the state of open circuit.Such that make reed relay 1 make a mistake action, reed relay 2 also can be operating normally such that it is able to exports normally.Action is made a mistake and reed relay 1 is also identical when being operating normally in reed relay 2.
Fig. 2 A is showing along the cross-section structure of the X-X ' line of Figure 1A, and Fig. 2 B is showing along the cross-section structure of the Y-Y ' line of this figure.Reed relay 1 has reed switch 4 and from the operation coil (magnet exciting coil) 5 of this reed switch 4 of external drive.One end of 2 ferromagnetic tongue 7,8 is oppositely disposed and is sealing in glass tubing 6 and forms by reed switch 4 dividually.In order to prevent the activation of contact and enclose noble gas etc. in glass tubing 6.Operation coil 5 is wound on glass tubing 6 around, utilizes the magnetic flux of this operation coil 5 to drive the relative tongue side of tongue 7,8 end and to carry out contact opening and closing.
In Fig. 2 A and Fig. 2 B, the situation of also substantially the same with reed relay 1 structure of reed relay 2 is illustrated, but as long as when having flowed into magnetic flux from outside, an arbitrary side is configured to access failure, it is possible to use the reed relay of different structure.
The reed relay 1,2 of present embodiment has respectively as shown in Figure 3: the 1st outside terminal T1 and the 2nd outside terminal T2, they are connected with the reed switch 4 carrying out on/off switching；And the 3rd outside terminal T3 and the 4th outside terminal T4, they make current flow through operation coil 5.Further, as shown in Figure 2 A and 2 B, utilize wiring (metal film pattern) 3a formed on printed wiring board 3, respectively by commonly connected each other to outside terminal T3, T4 of reed relay 1,2, and the side in outside terminal T1, T2 is connected to each other.
Thus, like that the operation coil 5 of reed relay 1,2 is connected in parallel as shown in Figure 4 A, as shown in Figure 4B the reed switch 4 (contact) of the outfan as reed relay 1,2 is connected in series.Its result is, reed relay 1,2 carries out action under same initial conditions, exports according to the logic " with (AND) " of the on/off of two reed relay 1,2.Namely, when the condition of regulation is set up, the operation coil 5 of two reed relay 1,2 is carried out excitation, reed relay 1,2 carries out connecting work in the lump, thus as switching device function, this switching device is fed into the power supply of the outside terminal T1 (or T2) of reed relay 1 or signal is supplied to the circuit in downstream from the outside terminal T2 (or T1) of reed relay 2.
On the other hand, when flowed into make operation coil 5 produce the interference of electric current, such as magnetic flux φ A, owing to the direction of the magnetic flux φ 1 of reed relay 1,2, φ 2 differs 180 degree, therefore the impact of magnetic flux φ A is contrary relation.Thus, even if the reed relay of a side carries out connecting work, the reed relay of the opposing party also can maintain disconnection (open circuit).In such manner, it is possible to suppress reed relay 1,2 both sides to carry out connecting work simultaneously, even if error of performance occurs the reed relay of a side because of interference, as long as the reed relay of the opposing party is normal, then taking the output after logical "and" also can be normal.Therefore, by making multiple relay become the configuration of the multiple inverter configuration that will not work because of interference simultaneously, it is possible to increase safety.
Further, since make the side that relay disconnects not dangerous because of fault, thus without becoming problem.
As described above, in the switching device of present embodiment, at the magnetic flux that multiple reed relay are configured to operation coil generation different directions, when having flowed into the interference making operation coil generation electric current, current value produced by least one operation coil carries out connecting current value during work less than reed relay.Thus, about the reed relay with this operation coil, even if disconnection also can be maintained owing to having flowed into interference, therefore, it is possible to guarantee high security.Therefore, as long as occurring misconnection to lead to such fault during 2 reed relay differences, would not connect in hazardous side, it is possible to reduce public cause trouble.Further, open circuit is maintained in case of a failure due to reed relay, therefore, it is possible to control to secure side.
Fig. 5 illustrates the structure example of the power supply system being equipped with the switching device shown in Fig. 1, Fig. 2 A and Fig. 2 B.This system supplies power supply to realizing the circuit of various function, such as output circuit or interface circuit etc. (or can also be device).
From reference power supply 12 to switching device 11 supply line voltage VREF.For the operation coil of the reed relay 1,2 in this switching device 11, supply control signal CS from CPU equal controller 13, be driven to when the condition of regulation is set up carry out in the lump connecting work.This switching device 11 is to the condition disconnecting side distribution safety of reed relay 1,2, and when the hardware or software that control device 13 occur abnormal, these relays 1,2 are in open-circuit condition.Therefore, supply voltage VREF is fed into the various circuit 14 in downstream and means that controlling device 13, the hardware being namely equipped with the system of switching device 11 or software normally carries out action.
In the past, in power supply system as above, when stopping in the system exception because of hardware or software or when out of control, it is impossible to ensure that output is in normal or dangerous state.Further, if being not provided with making the output of circuit will not become the such safety circuit of hazardous side protect because of single fault, then the state being likely fixed on danger is exported.On the other hand, when this power supply system breaks down, owing to stopping that the various circuit 14 in downstream are supplied power supply, therefore, it is possible to ensure that system is in safe state, it is possible to will confirm that when being not provided with safety circuit the power supply of safety is supplied to circuit 14.Therefore, by the condition to disconnection side distribution secure side, it is possible to realize emergency protection.
It addition, in Figure 5, illustrate power supply system, but can also be equally applicable various signals (input signal) are supplied at replacement power supply the various circuit in downstream, substantially can obtain identical action effect.
As described above, by making relay adopt multiple inverter configuration can improve the safety of device, it is possible to increase use the safety of the system of this switching device.The reed relay 1,2 used in embodiments is the universal product, small-sized and price is low., it is suppressed that guarantee safety because disturbing the malfunction that causes, and realize employing the product of switching device or the miniaturization of system and low price therefore.
Fig. 6 illustrates the variation of the switching device of embodiments of the present invention.In this switching device, with the front vertical of the 1st printed wiring board 3 the 2nd printed wiring board 15 is set, these the 1st, the 2nd printed wiring boards 3,15 are respectively mounted reed relay 1,16.
According to such structure, the differential seat angle relative to the magnetic flux φ A, the magnetic flux φ 1 of reed relay 1,16 that flow into from outside as shown in arrow, φ 3 is 90 degree.Thus, reed relay 1,16 will not carry out connecting work simultaneously, and schematically showing in Figure 1B, even if a side occurs error of performance, the opposing party also can carry out be operating normally (open-circuit condition maintaining relay).Therefore, it is suppressed that guarantee safety because disturbing the malfunction caused, and realize miniaturization and low price.
It addition, the invention is not restricted to above-mentioned embodiment and variation thereof, it is also possible to carry out various deformation and implement.
< variation 1 >
Such as, illustrate the situation installing 2 relays on printed wiring board, but as long as adopting the configuration not carrying out connecting work at least one relay of same magnetic flux flowed into from outside, naturally it is also possible to configure the relay of more than 3.
< variation 2 >
Further, when utilizing this switching device to process big electric current, it is also possible in the way of becoming the required magnitude of current, multiple relays are connected in parallel on above-mentioned printed wiring board and install.It is also configured as at least one relay in this case will not carry out because of the magnetic flux that flows into from outside connecting work simultaneously.
< variation 3 >
Additionally, to the situation in the direction of the magnetic flux configuring 2 relays with 180 degree be illustrated with 90 degree situations about configuring, but be not necessarily limited to these angles.When having flowed into magnetic flux from outside, as long as adopting at least one relay not carry out connecting the configuration of work, it is not limited to the specifically angles such as 90 degree or 180 degree.In other words, when having flowed into magnetic flux from outside, as long as current value produced by the driving coil of at least one relay (operation coil) carries out connecting current value during work less than this relay.
< variation 4 >
As an example of the relay of the universal product, illustrate that comparison is small-sized and the reed relay of low price, but be not limited to reed relay, generally can apply electromagnetic relay.
< variation 5 >
As the interference making driving coil (operation coil) produce electric current, illustrate magnetic flux, but when having flowed into the noises such as electromagnetic wave, by multiple relay configuration become current value produced by least one operation coil carry out connecting current value during work less than this relay, identical action effect can be obtained.
About the structure illustrated in embodiment above and variation, shape, size and configuration relation, simply to be appreciated that/to implement the content that the degree of the present invention briefly shows.Therefore the invention is not restricted to illustrated embodiment and variation, various mode can be altered in the scope without departing from the technological thought shown in claims.
Claims (3)
1. a switching device, it has multiple relay, and the plurality of relay carries out when the condition of regulation is set up connecting work in the lump, and input is supplied to downstream, and this switching device is characterised by,
The plurality of relay is configured to generate the connection of each operation coils from parallel connection of coils the magnetic flux of different directions, and the outfan of each relay is connected in series, when having flowed into the interference making operation coil generation electric current, current value produced by least one operation coil carries out connecting current value during work less than described relay.
2. switching device according to claim 1, it is characterised in that
The plurality of relay comprises the 1st relay and the 2nd relay installed in the way of relative with the two sides of printed wiring board.
3. switching device according to claim 1 and 2, it is characterised in that
Input signal, when carrying out connecting work together, is supplied to downstream, or the power supply inputted is supplied to downstream by the plurality of relay.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014257558A JP5740524B1 (en) | 2014-12-19 | 2014-12-19 | Switching device |
| JP2014-257558 | 2014-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105720548A true CN105720548A (en) | 2016-06-29 |
| CN105720548B CN105720548B (en) | 2019-10-18 |
Family
ID=53534153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510947382.3A Active CN105720548B (en) | 2014-12-19 | 2015-12-17 | Switching device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5740524B1 (en) |
| CN (1) | CN105720548B (en) |
| TW (1) | TWI686834B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383295B (en) * | 2020-10-28 | 2024-05-10 | 许继集团有限公司 | Electric fast transient anti-interference enhanced outlet circuit and anti-interference method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3715642A (en) * | 1971-06-21 | 1973-02-06 | Singer Co | Dc control circuits for direct drive motors continuously coupled to sewing machines for controlling sewing functions |
| US4163270A (en) * | 1978-01-27 | 1979-07-31 | Marus Louis J | Safety apparatus for use with a three-phase AC motor |
| JPS58103443U (en) * | 1982-01-08 | 1983-07-14 | 株式会社東芝 | Relay redundant circuit |
| CN102341265A (en) * | 2009-03-03 | 2012-02-01 | 株式会社Lg化学 | Apparatus and method for controlling a relay of a hybrid electric vehicle |
-
2014
- 2014-12-19 JP JP2014257558A patent/JP5740524B1/en active Active
-
2015
- 2015-12-17 TW TW104142403A patent/TWI686834B/en active
- 2015-12-17 CN CN201510947382.3A patent/CN105720548B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3715642A (en) * | 1971-06-21 | 1973-02-06 | Singer Co | Dc control circuits for direct drive motors continuously coupled to sewing machines for controlling sewing functions |
| US4163270A (en) * | 1978-01-27 | 1979-07-31 | Marus Louis J | Safety apparatus for use with a three-phase AC motor |
| JPS58103443U (en) * | 1982-01-08 | 1983-07-14 | 株式会社東芝 | Relay redundant circuit |
| CN102341265A (en) * | 2009-03-03 | 2012-02-01 | 株式会社Lg化学 | Apparatus and method for controlling a relay of a hybrid electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5740524B1 (en) | 2015-06-24 |
| TW201640550A (en) | 2016-11-16 |
| CN105720548B (en) | 2019-10-18 |
| JP2016119197A (en) | 2016-06-30 |
| TWI686834B (en) | 2020-03-01 |
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