• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a DC/DC stabilized voltage converting unit having a series circuit including an input filter, a converter stage having a control input and an output filter, the improvement comprising: a control stage having an output connected to the control input; a voltage regulating circuit receptive of an output of the output filter and having an output applied to the control stage; an anti-overvoltage and anti-overcurrent stage receptive of an output of the converter stage and having an output applied to the control stage; a voltage converter chain coupling circuit for effecting the linking of units in a chain; an internal monitoring and commutating circuit connected between the voltage regulating circuit and the control stage for surveying the outputs of the converter stage; a visually and electrically signalling alarm circuit receptive of the outputs of the output filter and having the outputs thereof applied to the chain coupling circuit; and wherein the chain coupling circuit includes a first input for linking to one pole of a power supply source, a coupling terminal connectable to said one pole of the power supply source, a third input for connecting to the coupling terminal of the next chain coupling circuit in the chain, first and second outputs connected to the input filter and a third output connected to the control stage.
    公开号:SU1087090A3
    申请号:SU792838853
    申请日:1979-11-02
    公开日:1984-04-15
    发明作者:Форро Деже；Балог Деже；Часар Ласло；Телдьеши Ласло；Хавалда Эндре
    申请人:Бхг Харадаштехникай Валлалат (Инопредприятие)；
    IPC主号:
    专利说明:

    to the output, one third of the pair of closing contacts of the first relay on the one hand through the closing contacts of the second relay is connected to one of the output pins, and on the other hand to the third input of the node, and the windings of the first relay through the power circuit of the transistor are connected to the first output pins of the node, winding the second relay is connected to one of the outputs of the display unit of the state of the converter stage, and the control input of the transistor is connected to the third and fourth inputs of the node via a resistive voltage divider, respectively, in addition One of the closing contacts of the second relay is connected via a resistor to the seventh input terminal, the sixth input terminal is connected to one of the ends of the resistor connected in turn to the base of the transistor, and the other end of the resistor is connected to the corresponding second closing contact of the second relay.
    3. The unit according to claim 1, characterized in that the internal control and switching node comprises a first optocoupler LED, a resistor connected to one
    from the input pins, and the transistor of this optocoupler is connected by a collector to the output to connect the source of the reference voltage, and the emitter through a resistor to one of the three other inputs of the node, the other two inputs are connected to the LED of the second optocoupler, the transistor-bounded circuit of the resistor and the capacitor, connected to the node outputs.
    4. The unit according to claim 1, characterized in that the status display node of the conversion stage is made as a chain of the first relay of this node connected in series, a resistor and the first LED, the extreme points of which are connected to one of the output stages of the conversion stage, other output terminals which are connected to the chain of the second LED of the node, the resistor and the winding of the second relay of the node connected in series, while the other outputs of the node serving to connect to the alarm node of the iH alarm are connected to Resp contacts the first and second node.
    one
    The invention relates to a stabilized power supply unit for issuing internal power ratings of communication devices, mainly for telephone exchanges.
    In large communications installations, such as electronic telephone exchanges, several voltage converter blocks are needed. The internal power ratings of telephone exchanges, in particular electronic software telephone exchanges, are usually obtained using rechargeable batteries or battery substitutes using a voltage conversion stage. When several voltage transducers are required for station operation, when switching on the station, the voltage transducers should not turn on at the same time.
    In order to ensure trouble-free continuous operation of communication installations, in particular telephone exchanges, installation units, the failure of which causes a system failure, are supplied with a parallel-connected backup unit. Since, in this case, the outputs of the power supply units are separated by series-connected diodes, the disadvantage of the solution is a significant loss of power in the diodes.
    A stabilized constant-voltage converter is known, which contains an input, control, converter, regulating (voltage and output level. This converter is voltage} 1 and has a complex construction, does not provide a consistent connection of voltage ratings and does not provide
    control capabilities, i.e. possesses low operational characteristics.
    Closest to the invention is a stabilized power supply unit for issuing internal power ratings of communication devices, mainly for telephone exchanges, containing several conversion stages, each of which consists of a conversion stage activation unit, an input filter connected to the input of an adjustable voltage converter. . The output of which is connected via an output filter to output pins, one of which is connected to the inputs of the state indication unit of the converter stage connected by its outputs to the inputs of the converter stage activation unit, as well as to the output of the voltage regulator whose output is connected a control node connected to the input of an adjustable voltage converter; an overload protection unit C2J.
    However, the device has a low quality performance.
    The purpose of the invention is to improve the performance characteristics by enabling the sequential switching of the power ratings.
    The goal is achieved by the fact that in a stabilized power supply unit for issuing internal power ratings of communication devices, mainly for telephone exchanges, contains several conversion stages, each of which consists of an input filter conversion unit connected to the input of an adjustable voltage converter. the output of which is connected through the output filter to the output pins, some of which are connected to the inputs of the display unit of the state of the converter step connected to its outputs with the inputs of the switching stage switching unit as well as with the input of the voltage regulator, the output of which is connected to the control unit connected to the input of the adjustable voltage converter and the overload protection node, a node is inserted into each of the conversion stages internal control and switching, connected by one of its inputs to the outputs of the adjustable voltage converter, by other inputs to the corresponding outputs of the voltage regulator, and outputs to the control inputs The first two inputs of the switch-on node of the conversion stage serve to connect the power, the third input serves to communicate with the output to connect to the power output of the converter-switch-on node of the previous conversion stage, the fourth input to connect to the remote switch, the fifth input for communication with one of the first input pins, and the sixth and seventh inputs - for self-blocking of the converter stage, with the first two outputs of the specified node being connected to the inputs of the input filter, and the third the output is connected to the inhibit output of the control node.
    In this case, the switch-on unit of the converter stage can contain a first and a second relay, the opening first pair of contacts of the first one of which is connected on one side to a capacitor connected in parallel to the first two outputs of the said node, one of which through a resistor shunted by the second pair of first contacts the relay is connected to the first of the input pins, and on the other side is connected to the third output pitch, with a third pair of closing contacts of the first relay on one side through the closing contact The second relay is connected to one of the output pins, and on the other hand to the third input of the node, the windings of the first relay through the power circuit of the transistor are connected to the first output pins of the node, the windings of the second relay are connected to one of the outputs of the transducer state display node steps, and the control input of the transistor is connected to the third and fourth inputs of the node through a resistive voltage divider, respectively; besides, one of the closing contacts of the second relay is connected to the seventh input terminal, the sixth, through a resistor Khodnev output (connected to one end of pesiftora associated in turn with the base of the transistor and the other end of the resistor is connected to a corresponding second normally open contact of the second relay. I In addition, in the device, the internal control and switching node can contain the LED of the first optocoupler, through a resistor connected to one of the input pins, and the transistor of this optocoupler is connected to the output of the source for connecting the voltage source, and the emitter through the resistor to one of the other three the inputs of the node, the remaining two inputs are connected to the LED of the optocoupler, the power circuit of the transistor which, bypassing the resistor and capacitor, is connected to the outputs of the node. In addition, the state indication unit of the converter stage is made in the form of a chain of the first relay of this node, the resistor and the first LED in series, the extreme points of which are connected to one of the output terminals of the converter stage, the other output terminals of which are connected to the chain from the series. The second LED of the node, the resistor and the winding of the second relay of the unit connected to one of the outputs of the node, while the other outputs of the node serving to connect to the alarm node are connected to the corresponding contacts of the first and second relay of the node. FIG. 1 shows a block diagram of a stabilized power supply unit for varying the internal power ratings of a communication device, preferably for telephone exchanges; FIG. 2. Scheme of the transducer step connection unit; in fig. 3 - the same, internal control and switching in FIG. 4 is the same, the layout of the display unit of the state of the converter stage. The device contains an input filter 15 connected to the input of an adjustable voltage converter 2 connected to the output filter 3 (Fig. 1). The inputs of the adjustable voltage converter 2 are connected to the control unit 4.1, having inputs 4. 2, 4.3, 4.4, in turn, is connected with the voltage regulator 06, as well as with the overload protection unit 6. The device also has a transducer step-up unit 7.1, having inputs 7.2, 7.8, 7.12, 7.13 and inputs 7.9 -7.11, internal control and switching node 8.1 with inputs 8.2-8.6 for controlling one or several output voltages, as well as a status indication unit of a converter stage 9.1, having inputs 9.29 .5 and inputs 9.6-9.9 for visual and electrical signaling. One of the first two inputs 7.2 of node 7.1 is connected to one of the power supply terminals, the second input 7.3 to the second output of the power source, the third input 7.4 serves to communicate with the output for connecting the power supply to the power supply of the conversion node, nor the previous conversion stage, the fourth Input 7.5 is used to connect to the on / off switch, and the sixth 7.7 and seventh 7.8 inputs - for self-blocking of the converter stage. If there are several chained telephone exchanges consisting of the same blocks, then the sixth and seventh inputs (7.7 and 7.8) of node 7.1 are connected to each other. This connection ensures the independent inclusion of the first link of the chain and prevents the chain from completely disintegrating when the previous section is turned off. The first two outputs 7.9 and 7.10 of node 7 .1 are connected to the inputs of input filter 1, and the third output 7.11 is connected to input 4.4 of the prohibition of the control node 4.1. The control node 4.1 is connected to the adjustable converter 2, as well as to the overload protection node 6. To the two inputs 4.2, A. 3 of the control node 4 are connected the outputs of the internal control and switching node 8.1, one of the inputs of which 8.2 and 8.3 are connected to the outputs variable voltage converter 2, and the other three inputs 8.4, 8.5, 8.6 are connected to the corresponding outputs of voltage regulator 5, the output of which is connected directly to the control unit 4.1, and the input to one of the outputs of the output filter 3. The overload protection unit is connected with one m of the outputs of the adjustable converter 2. The moves of the status indication block 9.1 of the conversion stage are connected to the outputs of the conversion stage, one of the outputs of the node 9.1 is connected to the node 7.1, and the others are used to connect to the alarm node 10. In FIG. 2 shows the execution of the switch-on stage of the converter 7.1, which has a fuse 11 connected in series with the first input 7.2 and a resistor 12 which is connected to the first output of the node 7.9. The first pair of disconnecting contacts of the first relay 13 is connected to a capacitor 14 connected in parallel with the output pins of the node and to the third output of the node 7.11. The second closing pair of contacts Ь the first relay 13 is connected to the resistor 12, the third pair of closing contacts with the relay 13 through the closing pair of contacts d of the second relay 15 is connected to the resistor 12 and the capacitor 14. One of the closing contacts o1 is connected to one end of the winding of the first relay 13 Figure 15, connected through series-connected resistors 16 and 17 to the fourth input 7.5. The second end of the winding of the first relay 13 is connected to the collector of transistor 18, the emitter of which is connected to the second input 7.3 of the node, and the base is connected via a resistor 17 to the input 7.5. node. The emitter-base circuit of transistor 18 contains potentiometer 19. Resistor 16 is connected via a diode 20 to fifth input terminal 7.6 through a diode 20 connected in series with a fourth input terminal. The common connection point of the closing contacts of the third pair of contacts with the relay 13 and the closing contacts d of the second relay is connected via a resistor 21 to the input 7.8. FIG. Figure 3 shows the internal control and switching node 8.1, which contains the LED of the first optocoupler 22, via a resistor 23 connected to one of the input ports 8.2 and 8.3, and the transistor of this optocoupler is connected to the output side by a collector to connect a reference voltage source through the resistor 24 to one of the three inputs 8.6 of the node, while the other two other inputs 8.4 and 8.5 are connected to the LED of the second optocoupler 25, the power circuit of the transistor, which is bridged by a resistor 26 and a capacitor 27, is connected to the output m node 8.7 and 8.8. FIG. A diagram of the state indication node of the converter stage is shown, which contains a chain of the first relay 28 of this node, the resistor 29 and the first LED 30, connected in series, the extreme points of which are connected to one of the output terminals of the converter stage 9.2 and 9.3, the other outputs of which are 9.4 and 9.5 are connected to a chain of series-connected second LED 31 of the node, resistor 32, and winding of the second relay 33 of the node, with the outputs of node 9.6 and 9.7 serving to be connected to the alarm node 10, Connected to the corresponding contacts of the first and second relays of this node, and the winding of the first relay 28 is connected to the outputs 9.8, 9.9. The input primary voltage appears at the first input 7.2 and the second input 7.3, Large capacitor 14 is charged through resistor 12. Transistor 18 is in conduction mode, and the first relay 13 through the opening contact a and through output 7.11 gives a signal prohibition of the control node 4.1, which prohibits the transfer of energy. When the capacitor 14 is charged to about 85% of the nominal input voltage, the first relay 13 is triggered, and the resistor 12 is short-circuited with a shorting pair of contacts b. Open a pair of contacts a relay. 13 is opened, and the inhibit signal is sprung up at output 7.11 of npe-i. A voltage appears at the output of the voltage converter. The second relay 15 is triggered by the display node 9.1 appearing at the outputs 7.12 and 7.13. A positive voltage passing through the resistor 21 appears at the input 7.8 of the node, which also appears at the input 7.3. Since the input 7.3 is connected to the input 7.5 following the voltage in the voltage converter circuit, the capacitor 14 of the next link of the chain is charged. When the capacitor 14 is charged to approximately 80Z of the nominal input voltage, after opening the transistor 18, the described process also takes place and spreads gradually over the entire input chain 7.7 and 7.8 of the first link of individual sections of chain 9 are connected to each other. After the operation of the second relay 15, this voltage converter becomes self-picking. The shutdown is performed by a remote switch in such a way that the input 7.5 is briefly connected to the input 7.3. Switching on and off of all power supply units can be carried out with the help of a remote switch only in such a way that the first link of each unit is turned on separately or simultaneously. If only one remote switch is used during shutdown, the remote switch wire in the first link of the first segment is connected to input 7.5, and in the first link of the subsequent sections is connected to inputs 7.6, which allow mutual isolation via diodes 20. Inside the sections the inputs 7.7 and 7.8 of the links should not be connected, thus these links on the self-grip do not become. For switching on and off using a remote switch, a switch with a middle position is used. With a gradual shutdown, several such switches are used. The turn on and off process can also be triggered by a signal with automatically set duration. The invention can be used with advantage, if in the operation mode without control it appears at input 7.2 and input 7.3, the primary voltage is obtained from a constant-to-constant voltage converter from a mains voltage, and there is no buffer battery, or . and there is a buffer battery, but there is no mains voltage for a long time. When mains voltage goes down, primary voltages disappear at inputs 7.2 and 7.3 and as a result, secondary voltages also disappear. After the mains voltage appears, primary voltage appears again at input 7.2 and input 7.3. For the reasons already mentioned, the elimination of the system is required to occur in a predetermined sequence, i.e. sequential chain, as in normal inclusion. This task can be solved by the invention, since when voltage 0 disappears, the contacts of both the first relay 13 and the second relay 15 disappear. When the voltage on the first 7.2 and second 7.3 inputs appears again, the process proceeds as described. When remote switching on, the remote switching signal should appear at the input 7.5 of the first link of the chain. If remote activation is not used, then input 7.5 must be directly connected to the first input 7.2. The task of the control and switching unit 8.1 is to ensure the operation of the backup unit under voltage, depending on all the output voltages. When a working device is damaged, the voltage on the buffer capacitor located in converter 2 is lower than the allowable value, which the voltage converter is operating as a backup unit, and the load gradually transfers to a backup voltage converter without transients. The outputs of the voltage converter are generally unevenly loaded. The control unit 4.1 and the voltage regulator 5 are directly connected to the output with a maximum load. If this output becomes defective, then the backup node under voltage includes a part of the circuit consisting of element 25, capacitor 27 and resistor 26, as follows. The voltage of the converter used as a backup node under voltage must be set lower, namely, approximately 100 mV, than the voltage .. of a properly working voltage converter. At such an exhibition, the backup node connected in parallel with the running converter is. the voltage does not cause any output, since the signal coming from the voltage regulator 5 causes the current to flow through the diode of the element 25, due to which the transistor is open. The operation of the control node 4.1 is inhibited by this transistor, so that the output transistor operating in the switching mode of the known adjustable converter remains in the locked state of the research institute. If the output voltage of the working voltage converter gradually disappears, the current flowing through the diode of the element 25 also gradually stops, the transistor closes and as a result, the hall of the control node 4.1 stops, and the backup node under the voltage gradually takes on; output voltage A delay circuit consisting of a capacitor 27 and a resistor 26 is used to prevent inadvertent switching caused by noise. Under the influence of two voltages of a voltage converter, for example, under the influence of a first current optoelectronic current element 22 flowing through the diode 8.2 and 8.3, its transistor is opened. This process is sensed by the voltage regulator 5, and under the action of the reference voltage Uc, the voltage regulator 5 is controlled so that one of the inhibit signals stops. If the output power source disappears, the element 22 is locked. This is felt by the voltage regulator 5, which prohibits the operation of the working source and the load is automatically taken over by a parallel-connected backup unit under voltage. When the power supply is working properly, the LEDs 31 and 30 are light and the relays 28 and 33 remain energized. Included sequence contacts, relays 28 and 33 signal c. central alarm 10 that the power supply is working properly. If the power supply unit still has other secondary outputs, then additional LEDs, resistors and windings should be switched on in series to these outputs. The contacts of these relays must be connected in series with the contacts f,. When one of the voltages disappears, the LED connected to this output will go out, the relay will de-energize and operating the central alarm circuit will generate an alarm. 0 This informs the service provider1 (1st person. An extinguished LED indicates a failed power supply unit with a visual signal, and the defect can be repaired by replacing the defective node. If the defective power supply unit is the first link in the chain and is not under voltage the redundant node, then other power supply units of this section of the chain are turned off after the second relay 15 is built in the sequential connection of the chain to the node. If the first link of the chain section has a backup unit under voltage, If there is a short circuit in the connected power line, the backup unit also cannot be turned on, and this section of the circuit goes off in this case. The advantage of the invention is that the voltage converter is turned on, producing internal voltages in a predetermined sequence The sequential switching node of the converter stage allows remote switching the voltage converter unit on and off. There is one advantage to the fact that the voltage converter is provided with a backup unit, powered by a voltage, so that if it fails, it immediately goes into operation without interrupting the supply current. The redundant power supply unit without the inclusion of any additional elements is simply connected in parallel to the outputs of the main power supply unit. With this technical solution, all the outputs of the power supply unit issuing several voltages can be controlled, and if any voltage is lost, switching can be made. The display unit of the state of the converter stage has a simple construction and does not require highly qualified service personnel, and with the help of this scheme you can quickly find the damaged unit and turn it off or replace it.
    权利要求:
    Claims (4)
    [1]
    1. STABILIZED POWER SUPPLY FOR THE DISPLAY OF INTERNAL POWER SUPPLIES OF COMMUNICATION DEVICES, mainly for telephone exchanges, containing several converter stages, each of which consists of a converter stage switching unit, an input filter connected to the input of an adjustable voltage converter, the output of which is connected via output filter to the output terminals, one of which is connected to the inputs of the node indicating the status of the converter stage, connected by its outputs from the input the switching unit of the converter stage, as well as to the input of the voltage regulator, the output of which is connected to the control unit connected to the input of the adjustable voltage converter, and the overload protection unit, characterized in that, in order to improve operational characteristics, is introduced into each of the converter stages an internal control and switching unit, connected by one of its inputs to the outputs of the adjustable voltage converter, other inputs to the corresponding outputs of the voltage regulator and the outputs - to the inputs of the control unit, while the first two inputs of the switching unit of the converter stage are used to connect power, the third input is used to communicate with the terminal for connecting to the power terminal of the converter of the switching unit of the previous converter stage, the fourth input is for connecting to the remote switch, the fifth input for communication with one of the first input terminals, and the sixth and seventh inputs for self-locking the converter stage, while the first two outputs of the specified node are connected to input filter passages and the third output is connected to the conclusion prohibition control node.
    [2]
    2. The block according to claim 1, characterized in that the switching stage switching unit includes a first and second relay, the first pair of disconnecting contacts of the first of which is connected on one side to a capacitor connected in parallel to the first two outputs of the said node, one of which is through a resistor shunted by the closing second pair of contacts of the first relay is connected to the first of the input terminals, and on the other hand is connected to the third output terminal, and the third pair of making contacts of the first relay on the one hand through the contacting contacts of the second relay are connected to one of the output terminals, and on the other hand, to the third input of the node, the windings of the first relay through the power circuit of the transistor connected to the first output terminals of the node, the windings of the second relay to one of the outputs of the node indicating the status of the converter stage, and the control input of the transistor through a resistive voltage divider is connected to the third and fourth inputs of the node, respectively, in addition, one of the make contacts of the second relay is connected through a resistor to the seventh input terminal m, the sixth input terminal is connected to one of the ends of the resistor, which, in turn, is connected to the base of the transistor, and the other end of the resistor is connected to the corresponding second make contact of the second relay.
    [3]
    3. Block pop. 1, distinguished by the fact that the internal control and switching unit contains the LED of the first optocoupler through a resistor connected to one of the input terminals, and the transistor of this optocoupler is connected by a collector to the terminal for connecting the reference voltage source, and the emitter through the resistor to one of the other three inputs of the node, the other two inputs are connected to the LED of the second optocoupler, the power circuit of the transistor which is shunted by a resistor and capacitor, is connected to the outputs of the node.
    [4]
    4. The unit according to claim 1, characterized in that the node indicating the status of the converter stage is made in the form of a chain of series-connected first relays of this node, a resistor and a first LED, the extreme points of which are connected to one of the output terminals of the converter stage, and other outputs the conclusions of which are connected to a chain of series-connected second LEDs of the node, the resistor and the winding of the second relay of the node, while the other outputs of the node, which are used to connect to the alarm node, are connected to corresponding contacts of the first and second node. .
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    同族专利:
    公开号 | 公开日
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    HU176798B|1981-05-28|
    DE2942660A1|1980-05-22|
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    引用文献:
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    CN102130590B|2011-02-28|2013-07-17|徐工集团工程机械股份有限公司江苏徐州工程机械研究院|Control method of proportional valve output compensation circuit|
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    CN112542035A|2020-12-18|2021-03-23|无锡蓝天电子股份有限公司|Fire alarm device capable of automatically finishing bus voltage|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    HU78HI499A|HU176798B|1978-11-16|1978-11-16|Stabilized dc/dc voltage converte|
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