Track light assembly and track lighting device

Abstract

The present application discloses a track light assembly and a track lighting device, belonging to the technical field of electronic and electrical technologies. The track light assembly includes: a data sending circuit configured to provide a positive power supply voltage signal to a data transceiver terminal after current limiting when the voltage at a signal output terminal is at a first level, and provide a voltage signal with a voltage at a second level to the data transceiver terminal when the voltage at the signal output terminal is at a second level; a data receiving circuit configured to set the voltage at a signal input terminal to the same level as the voltage at the data transceiver terminal; a control circuit configured to provide a data signal with a voltage switching between a first level and a second level to the signal output terminal during a data sending period, and receive data signals transmitted on a data transmission line by determining the level of the voltage at the signal input terminal during other periods. The present application can help solve the problem that existing intelligent track light products are prone to reversely connecting data transmission lines when installing track light assemblies.

Description

Technical Field

[0001] This application relates to electro - electrical technology, and particularly to a track light assembly and a track lighting device. Background Art

[0002] Different from traditional lamps, the lamps in track light products omit the power plugs led out by power cords. Each lamp is installed on a track connected to a power source, and each lamp can move to any position on the track without affecting the normal operation of the lamp. This not only reduces the number of required power cords, power plugs, and power socket seats, but also makes the installation, layout, maintenance, and replacement of the lamps simpler.

[0003] Wired intelligent track light products not only use the track to transmit power voltage, but also use the track to transmit data between the track light assemblies installed on the track, so as to achieve more abundant application functions. For example, a control host installed on the track receives control instructions from a user terminal through a wireless connection, and transmits the control commands issued by the control host to each lamp installed on the track through the track, so that each lamp synchronously executes the corresponding lighting operation according to the received control commands, realizing convenient functions such as voice - controlled switch, timed switch, custom - condition switch, and lighting effect switching.

[0004] However, current wired intelligent track light products all require at least two different data transmission lines to be set in the track to achieve data transmission between track light assemblies, and when installing the track light assemblies, it is necessary to pay attention to distinguishing the two data transmission lines and not connect them reversely, which brings a lot of trouble to the design, layout, installation, and use of related components. Summary of the Invention

[0005] This application provides a track light assembly and a track lighting device, which can help solve the problem that it is easy to connect the data transmission lines reversely when installing the track light assembly in existing intelligent track light products.

[0006] An embodiment of this application provides a track light assembly. The track light assembly is used to be installed on a track. The positive power supply terminal, negative power supply terminal, and data transceiver terminal of the track light assembly installed on the track are respectively connected to the positive power voltage line, negative power voltage line, and data transmission line in the track. The track light assembly includes a data sending circuit, a data receiving circuit, and a control circuit. Among them,

[0007] The data sending circuit is respectively connected to the positive power supply terminal, the data transceiver terminal, and the signal output terminal of the control circuit. The data sending circuit is configured to supply the positive power supply voltage signal to the data transceiver terminal after current limiting when the voltage at the signal output terminal is at a first level, and supply a voltage signal at the second level to the data transceiver terminal when the voltage at the signal output terminal is at a second level; wherein, the positive power supply voltage signal is a voltage signal at the first level provided by the positive power supply terminal, and the first level is higher than the second level.

[0008] The data receiving circuit is respectively connected to the data transceiver terminal and the signal input terminal of the control circuit. The data receiving circuit is configured to set the voltage at the signal input terminal to the first level when the voltage at the data transceiver terminal is at the first level, and set the voltage of the signal input terminal to the second level when the voltage at the data transceiver terminal is at the second level.

[0009] The control circuit is configured to provide a data signal whose voltage switches between the first level and the second level to the signal output terminal during a data sending period, and receive the data signal transmitted on the data transmission line by determining the level of the voltage at the signal input terminal during a period other than the data sending period.

[0010] In some possible implementation manners, corresponding to the track where the data transmission line includes a first data transmission line and a second data transmission line, the data transceiver terminal of the track lamp assembly includes a first terminal for connecting the first data transmission line and a second terminal for connecting the second data transmission line, and the first terminal is connected to the second terminal.

[0011] In some possible implementation manners, the track lamp assembly further includes a rectification circuit provided between the data sending circuit and the positive power supply terminal. A first input terminal of the rectification circuit is connected to the positive power supply terminal, a second input terminal of the rectification circuit is connected to the negative power supply terminal, a first output terminal of the rectification circuit is connected to the data sending circuit, and a second output terminal of the rectification circuit is connected to the common terminal of the track lamp assembly.

[0012] In some possible implementations, the rectifier circuit includes a first diode, a second diode, a third diode, and a fourth diode; wherein, a first input terminal of the rectifier circuit is respectively connected to the positive electrode of the first diode and the negative electrode of the fourth diode, a second input terminal of the rectifier circuit is respectively connected to the positive electrode of the second diode and the negative electrode of the third diode, a first output terminal of the rectifier circuit is respectively connected to the negative electrode of the first diode and the negative electrode of the second diode, and a second output terminal of the rectifier circuit is respectively connected to the positive electrode of the third diode and the positive electrode of the fourth diode.

[0013] In some possible implementations, the data sending circuit includes a first resistor and a first switching element, and the data receiving circuit includes a first voltage stabilizing diode and a second resistor; wherein, a first end of the first resistor is connected to the first output terminal of the rectifier circuit, and a second end of the first resistor is connected to the data transceiver terminal; a control terminal of the first switching element is connected to the signal output terminal of the control circuit, a first end of the first switching element is connected to the data transceiver terminal, a second end of the first switching element is connected to the common terminal, and the first switching element is a switching element that is open between the first end and the second end when the voltage at the control terminal is the first electric level and is connected between the first end and the second end when the voltage at the control terminal is the second electric level; a positive electrode of the first voltage stabilizing diode is connected to the signal input terminal of the control circuit, a negative electrode of the first voltage stabilizing diode is connected to the data transceiver terminal; a first end of the second resistor is connected to the signal input terminal of the control circuit, a second end of the second resistor is connected to the common terminal, and a voltage value obtained by multiplying the resistance value of the second resistor by the minimum stable current of the first voltage stabilizing diode is within the voltage value range of the first electric level.

[0014] In some possible implementations, the track light assembly further includes a voltage converter circuit, a voltage input terminal of the voltage converter circuit is connected to the first output terminal of the rectifier circuit, a ground terminal of the voltage converter circuit is connected to the common terminal, and a voltage output terminal of the voltage converter circuit is respectively connected to the control circuit, the data sending circuit, and the data receiving circuit, and the voltage converter circuit is configured to provide operating voltages to the control circuit, the data sending circuit, and the data receiving circuit.

[0015] In some possible implementation manners, the data sending circuit includes a first transistor, a second transistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor; wherein, a first end of the third resistor is connected to a first output end of the rectifying circuit, and a second end of the third resistor is connected to the data transceiver terminal; a first end of the fourth resistor is connected to the signal output end of the control circuit, and a second end of the fourth resistor is connected to a gate of the first transistor; a first end of the fifth resistor is connected to a voltage output end of the voltage converter circuit, and a second end of the fifth resistor is connected to the gate of the first transistor; a first end of the sixth resistor is connected to the gate of the first transistor, and a second end of the sixth resistor is connected to the common terminal; a first pole other than the gate of the first transistor is connected to a gate of the second transistor, and a second pole other than the gate of the first transistor is connected to the common terminal; a first end of the seventh resistor is connected to the voltage output end of the voltage converter circuit, and a second end of the seventh resistor is connected to the gate of the second transistor; a first pole other than the gate of the second transistor is connected to the data transceiver terminal, and a second pole other than the gate of the second transistor is connected to the common terminal.

[0016] In some possible implementation manners, the data receiving circuit includes a second zener diode, a third transistor, a fourth transistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor; wherein, a negative electrode of the second zener diode is connected to the data transceiver terminal, and a positive electrode of the second zener diode is connected to a first end of the eighth resistor; a second end of the eighth resistor is connected to a gate of the third transistor; a first end of the ninth resistor is connected to the gate of the third transistor, and a second end of the ninth resistor is connected to the common terminal; a first end of the tenth resistor is connected to the voltage output end of the voltage converter circuit, and a second end of the tenth resistor is connected to a gate of the fourth transistor; a first end of the eleventh resistor is connected to the voltage output end of the voltage converter circuit, and a second end of the eleventh resistor is connected to the signal input end of the control circuit; a first pole other than the gate of the third transistor is connected to a gate of the fourth transistor, and a second pole other than the gate of the third transistor is connected to the common terminal; a first pole other than the gate of the fourth transistor is connected to the signal input end of the control circuit, and a second pole other than the gate of the fourth transistor is connected to the common terminal.

[0017] In some possible implementation manners, the control circuit is configured to determine a level of a voltage at the signal input end by comparing a voltage value at the signal input end with a reference voltage value, and the reference voltage value is equal to a sum of a zener voltage of the second zener diode and a gate turn-on voltage of the third transistor.

[0018] An embodiment of the present application further provides a track lighting device, which includes a track and at least one of any of the above track lamp assemblies mounted on the track.

[0019] In some possible implementation manners, the track lighting device includes at least two of the track lamp assemblies, and the at least two track lamp assemblies include a first track lamp assembly and at least one second track lamp assembly; wherein, the second track lamp assembly further includes a lighting circuit connected to the lighting control terminal of the control circuit in the second track lamp assembly, and the lighting circuit is configured to emit light under the control of a lighting control signal at the lighting control terminal; the control circuit in the first track lamp assembly includes a processor and a memory for storing executable instructions of the processor, and the processor is configured to send, when executing the executable instructions, a data signal including a lighting control instruction and switching between the first level and the second level to the at least one second track lamp assembly through a data transmission line in the track, so that the control circuit in the second track lamp assembly generates the lighting control signal according to the lighting control instruction.

[0020] It can be seen that the track lamp assemblies in the embodiments of the present application have the function of realizing data transmission between each other by only using one data transmission line - the control circuit of the first track lamp assembly mounted on the track can provide a data signal that switches between a first level and a second level to the signal output terminal, and use the data sending circuit to provide a signal with a corresponding change in level to the data transmission line connected to the data transceiver terminal; while the data receiving circuit of the second track lamp assembly mounted on the same track can set the level of the signal input terminal of the control circuit of the second track lamp assembly to a corresponding level according to the level on the data transmission line, so that the control circuit can receive the data signal transmitted on the data transmission line by determining the level of the signal input terminal; in addition, the control circuit is configured to receive the data signal in a period other than the data sending period, so that the situation of self-transmission and self-reception will not occur. In this way, any two or more track lamp assemblies mounted on the same track can realize half-duplex bidirectional data transmission by only using one data transmission line, and the troubles brought by the dependence on multiple data transmission lines can be solved, and the track lamp assemblies do not need to distinguish directions during installation; moreover, the circuit structures of the data receiving circuit and the data sending circuit can be very simple, which is beneficial to simplifying the internal structures, design processes and installation processes of the track and the track lamp assemblies, and greatly improving the use convenience of the wired intelligent track lamp products.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of a track lighting device in a comparative example of the present application;

[0024] Figure 2 is a schematic structural diagram of a track lighting device in an embodiment of the present application;

[0025] Figure 3 is a schematic structural diagram of a track lighting device in another embodiment of the present application;

[0026] Figure 4 is Figure 3 a schematic circuit diagram of the first track lamp assembly and the second track lamp assembly in the shown track lighting device;

[0027] Figure 5 is Figure 4 a schematic circuit principle diagram of the first track lamp assembly transmitting the second level to the second track lamp assembly in the shown track lighting device;

[0028] Figure 6 is Figure 4 a schematic circuit principle diagram of the first track lamp assembly transmitting the first level to the second track lamp assembly in the shown track lighting device;

[0029] Figure 7 is a schematic circuit diagram of a track lamp assembly in an embodiment of the present application. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail in conjunction with the accompanying drawings.

[0031] In the present application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] Figure 1 is a schematic structural diagram of a track lighting device in a comparative example of the present application. Refer to Figure 1, the track lighting device includes a lamp track 110, a control host 120 mounted on the lamp track 110, and two track lamps 130. The lamp track 110 includes: a power supply 111, a positive power line L1 that provides a positive power voltage signal by the power supply 111, a negative power line L2 that provides a negative power voltage signal by the power supply 111, and a first data transmission line L3 and a second data transmission line L4 disposed inside the lamp track 110. Among them, the positive power line L1 is respectively connected to the positive power supply terminals of the control host 120 and each track lamp 130, and the negative power line L2 is respectively connected to the negative power supply terminals of the control host 120 and each track lamp 130, so that the power supply 111 supplies power to the control host 120 and each track lamp 130; the first data connection terminals of the control host 120 and each track lamp 130 are connected together through the first data transmission line L3 in the lamp track 110, and the second data connection terminals of the control host 120 and each track lamp 130 are connected together through the second data transmission line L4 in the lamp track 110, so that the control host 120 and each track lamp 130 can perform data communication with each other based on communication protocols such as the RS-485 serial communication standard or the Digital Addressable Lighting Interface (DALI) digital lighting control international standard and so on.

[0033] Different from traditional lamps, the track lamps 130 in this track lighting device omit the power plugs led out by the power lines. Each track lamp 130 is mounted on the lamp track 110 including the power supply 111, and each track lamp 130 can move to any position on the lamp track 110 without affecting its normal operation, which not only reduces the number of required power lines, power plugs and power sockets, but also makes the installation, layout, maintenance and replacement of the lamps simpler. Moreover, this track lighting device also uses the lamp track 110 to realize data transmission between the track lamp components mounted on the track, so that more abundant application functions can be realized. In one example, the control host 120 mounted on the lamp track 110 receives the control instructions of the user terminal through wireless connection, and transmits the control commands issued by the control host 120 to each track lamp 130 mounted on the track through the lamp track 110, so that each track lamp 130 can synchronously execute the corresponding lighting operation according to the received control commands, realizing convenient functions such as voice control switch, timing switch, custom condition switch, lighting effect switching and so on.

[0034] It should be noted that the track light assembly described in this article refers to the components used to be installed on the track in the track lighting device. For example, the above control host 120 and track light fixture 130 are both a kind of track light assembly respectively. In addition, the structures such as the power line and data transmission line in the track described in this article refer to the conductor structures that extend along the extension direction of the track and are used to conduct voltage, current or electrical signals, and are not necessarily in the form of wires or electric cables.

[0035] In the related art, data communication between track light assemblies must use two or more data transmission lines. For example, the RS-485 communication protocol requires the use of two data transmission lines, and when installing the track light assembly, it is required that the data transmission end be correspondingly connected to the data transmission line without being reversed, otherwise data communication will be abnormal. Therefore, the track lighting device based on the RS-485 communication protocol has the problem of complex installation methods of track light assemblies in use, and there are often abnormal situations where the entire track lighting device cannot work properly due to the reversal of one track light assembly.

[0036] Figure 2 It is a schematic structural diagram of a track lighting device in an embodiment of the present application. The track light assemblies in this track lighting device have the function of realizing data transmission between each other by only using one data transmission line, thereby helping to solve the problem that the data transmission line is easily reversed when installing the track light assembly. Refer to Figure 2 , this track lighting device includes a track 10 and at least one track light assembly 20 installed on the track 10. The track 10 is provided with a positive power supply voltage line LA, a negative power supply voltage line LB and a data transmission line LC. The track light assembly 20 has a positive power supply end U1, a negative power supply end U0 and a data transceiver end SR. When the track light assembly 20 is installed on the track 10, the positive power supply end U1, the negative power supply end U0 and the data transceiver end SR of the track light assembly 20 are respectively connected to the positive power supply voltage line LA, the negative power supply voltage line LB and the data transmission line LC in the track 10.

[0037] The track light assembly 20 includes a data sending circuit 21, a data receiving circuit 22, and a control circuit 23. The data sending circuit 21 is respectively connected to the positive power supply terminal U1, the data transceiver terminal SR, and the signal output terminal Tx of the control circuit 23. The data sending circuit 21 is configured to provide the positive power supply voltage signal to the data transceiver terminal SR after current limiting when the voltage at the signal output terminal Tx is the first level, and provide the voltage signal with the second level to the data transceiver terminal SR when the voltage at the signal output terminal Tx is the second level. Wherein, the positive power supply voltage signal is the voltage signal with the first level provided by the positive power supply terminal U1, and the first level is higher than the second level. In one example, the first level is a high level and the second level is a low level. The data receiving circuit 22 is respectively connected to the data transceiver terminal SR and the signal input terminal Rx of the control circuit 23. The data receiving circuit 22 is configured to set the voltage at the signal input terminal Rx to the first level when the voltage at the data transceiver terminal SR is the first level, and set the voltage of the signal input terminal Rx to the second level when the voltage at the data transceiver terminal SR is the second level. The control circuit 23 is configured to provide a data signal with the voltage switching between the first level and the second level to the signal output terminal Tx during the data sending period, and receive the data signal transmitted on the data transmission line LC by determining the level of the voltage at the signal input terminal Rx during the period other than the data sending period.

[0038] It can be seen that the track light assembly 20 in the embodiment of the present application has the function of realizing data transmission between each other by only using one data transmission line LC. In one example, the track lighting device includes a track 10 and a first track light assembly and a second track light assembly mounted on the track 10. The internal structures of the first track light assembly and the second track light assembly are the same as Figure 2The internal structure of the track light assembly 20 shown; thus, the control circuit 23 of the first track light assembly installed on the track 10 can provide a data signal that switches between a first level and a second level to the signal output terminal Tx, and use the data transmission circuit 22 to provide a signal with a corresponding change in level to the data transmission line LC connected to the data transceiver SR; and the data receiving circuit 22 of the second track light assembly installed on the same track 10 can set the level of the signal input terminal Rx of the control circuit 23 of the second track light assembly to the corresponding level according to the level on the data transmission line LC, so that the control circuit 23 of the second track light assembly can receive the data signal transmitted on the data transmission line LC from the first track light assembly by determining the level of the signal input terminal Rx; in addition, the control circuit 23 is configured to receive data signals during periods other than the data transmission period, so that the situation of self-transmission and self-reception does not occur. As can be seen from the above example, any two or more track light assemblies 20 installed on the same track 10 can achieve half-duplex bidirectional data transmission between each other using only one data transmission line LC, so that the troubles caused by the dependence on multiple data transmission lines in the related art can be solved, and the track light assembly 20 does not need to distinguish different data transmission lines or data connection ends during installation; moreover, the circuit structures of the data receiving circuit 21 and the data sending circuit 22 can be very simple, which is beneficial to simplifying the internal structures, design processes, and installation processes of the track 10 and the track light assembly 20, and greatly improving the use convenience of the wired intelligent track light product.

[0039] In one example, corresponding to a track in which the data transmission line includes a first data transmission line and a second data transmission line (such as Figure 1 the lamp track 110 described), the data transceiver SR of the above track light assembly 20 includes a first terminal for connecting the first data transmission line and a second terminal for connecting the second data transmission line, and the first terminal and the second terminal are connected inside the track light assembly 20. That is, the data transceiver SR of the track light assembly 20 for connecting the data transmission line in the track can be configured to be compatible with both Figure 1 the four-wire lamp track 110 shown in Figure 2The three-wire track 10 shown, for example, the data transceiver SR includes a separate data connection terminal corresponding to the above-mentioned data transmission line LC, and another data connection terminal composed of the above-mentioned first terminal and the above-mentioned second terminal, and all these structures are connected together, so that whether it is a three-wire or four-wire track, the track light assembly 20 can be installed and work properly without distinguishing the direction and polarity. Of course, according to the differences in the position, shape, and structure of each data transmission line inside the track, the position, shape, and structure of the terminals in the data transceiver SR of the track light assembly 20 can be set correspondingly to form a connection between the data transceiver SR and the data transmission line after the track light assembly 20 is installed.

[0040] Figure 3 is a schematic structural diagram of a track lighting device in another embodiment of the present application. Refer to Figure 3 , the track lighting device includes a track 10, and a first track light assembly 20A and at least two second track light assemblies 20B installed on the track 10. Among them, the track 10 includes: a track power supply 11, a positive power supply voltage line LA that provides a positive power supply voltage signal by the track power supply 11, a negative power supply voltage line LB that provides a negative power supply voltage signal by the track power supply 11, and a data transmission line LC provided inside the track 10. Among them, the positive power supply voltage line LA is respectively connected to the positive power supply terminals of the first track assembly 20A and each second track assembly 20A, and the negative power supply voltage line LB is respectively connected to the negative power supply terminals of the first track assembly 20A and each second track assembly 20A, so that the track power supply 11 supplies power to the first track assembly 20A and each second track assembly 20A; the data transceivers of the first track assembly 20A and each second track assembly 20A are connected together through the data transmission line LC in the track 10.

[0041] Figure 4 is Figure 3 a schematic circuit structure diagram of the first track light assembly and the second track light assembly in the track lighting device shown. Refer to Figure 4 , each of the first track light assembly 20A and the second track light assembly 20B has an internal structure of the track light assembly 20 as shown in Figure 2 ( Figure 4 the components including the control circuit in the track light assembly are omitted in Figure 4 ), and further includes a rectifier circuit 24 provided between the data sending circuit 21 and the positive power supply terminal U1. The rectifier circuit 24 has a first input terminal for input voltage ( Figure 4One end connected to the negative power supply terminal U0 (in the middle) and the first output terminal and the second output terminal for outputting voltage, where the first output terminal is connected to the first end of the first resistor R1 in the data transmission circuit 21, and the second output terminal is connected to the common terminal of the track light assembly (the first common terminal PGND of the first track light assembly 20A or the second common terminal SGND of the second track light assembly 20B). As an example, Figure 4 The rectifier circuit 24 in includes a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4; wherein, the first input terminal of the rectifier circuit 24 is respectively connected to the positive electrode of the first diode D1 and the negative electrode of the fourth diode D4, the second input terminal of the rectifier circuit 24 is respectively connected to the positive electrode of the second diode D2 and the negative electrode of the third diode D3, the first output terminal of the rectifier circuit 24 is respectively connected to the negative electrode of the first diode D1 and the negative electrode of the second diode D2, and the second output terminal of the rectifier circuit 24 is respectively connected to the positive electrode of the third diode D3 and the positive electrode of the fourth diode D4. Based on the setting of the rectifier circuit 24, the first track light assembly 20A and the second track light assembly 20B do not need to distinguish the polarity of the power supply during installation, because even if the positive power supply terminal U1 and the negative power supply terminal U0 are connected reversely, the output voltage between the first output terminal and the second output terminal of the above rectifier circuit 24 will not change. Combining the above characteristics of not needing to distinguish the data transmission line, the track light assembly including the above rectifier circuit 24 can be formed into a track light assembly that does not need to distinguish the direction and polarity at all during installation, thus greatly increasing the usability of the track lighting device.

[0042] Please continue to refer to Figure 4 , Figure 4 In the first track light assembly 20A includes a first resistor R1 and a first switching element S1, and the data receiving circuit 22 includes a first zener diode DZ1 and a second resistor R2; wherein, the first end of the first resistor R1 is connected to the first output terminal of the rectifier circuit 24 (i.e., the negative electrode of the first diode D1), the second end of the first resistor R1 is connected to the data transceiver terminal SR; the control terminal of the first switching element S1 is connected to the signal output terminal Tx of the control circuit 23, the first end of the first switching element S1 is connected to the data transceiver terminal SR, the second end of the first switching element S1 is connected to the common terminal PGND, and the first switching element S1 is a switching element that is disconnected between the first end and the second end when the voltage at the control terminal is the first level and is connected between the first end and the second end when the voltage at the control terminal is the second level; the positive electrode of the first zener diode DZ1 is connected to the signal input terminal Rx of the control circuit 23, the negative electrode of the first zener diode DZ1 is connected to the data transceiver terminal SR; the first end of the second resistor R2 is connected to the signal input terminal Rx of the control circuit 23, the second end of the second resistor R2 is connected to the common terminal, and the voltage value obtained by multiplying the resistance value of the second resistor R2 by the minimum stable current of the first zener diode DZ1 is within the voltage value range of the first level. As Figure 4As shown, the second track light assembly 20B has the same circuit structure as the first track light assembly 20A.

[0043] Figure 5 is Figure 4 a schematic diagram of the circuit principle in which the first track light assembly in the track lighting device shown transmits the second level to the second track light assembly. Figure 6 is Figure 4 a schematic diagram of the circuit principle in which the first track light assembly in the track lighting device shown transmits the first level to the second track light assembly.

[0044] Refer to Figure 4 and Figure 5 , during the process of the first track light assembly 20A sending a data signal to the second track light assembly 20B, when the signal output terminal Tx in the first track light assembly 20A is at the second level (low level), the first switching element S1 in the first track light assembly 20A is in a state where the first end is connected to the second end, so it can be equivalent to a wire. At this time, the equivalent circuit structure between the positive power supply terminal U1 and the negative power supply terminal U0 is as Figure 5 shown, where the resistor Rz is the equivalent resistor obtained by paralleling all the first resistors R1 in all the track assemblies installed on the track 10 at this time. It can be seen that the potential on the data transmission line LC is pulled down to the same potential (low level) as that at the first common terminal PGND by the first switching element S1, so that the first voltage stabilizing diode DZ1 in the second track light assembly 20B is in a forward-biased or reverse-biased state but not broken down, and the potential at the signal input terminal Rx in the second track light assembly 20B is pulled down to the second level (low level), thus realizing the transmission of the second level from the first track light assembly 20A to each second track light assembly 20B.

[0045] Refer to Figure 4 and Figure 6 , during the process of the first track light assembly 20A sending a data signal to the second track light assembly 20B, when the signal output terminal Tx in the first track light assembly 20A is at the first level (high level), the first switching element S1 in the first track light assembly 20A is in a state where the first end is disconnected from the second end, so it can be equivalent to an infinite resistor. At this time, the equivalent circuit structure between the positive power supply terminal U1 and the negative power supply terminal U0 is as Figure 6As shown, the resistance Rz is the equivalent resistance of all the first resistors R1 in the track components installed on the track 10 at this time connected in parallel. It can be seen that the potential on the data transmission line LC returns to the positive power supply voltage signal (the first level) after current limiting, and the first voltage stabilizing diode DZ1 is reverse-biased. The potential at the signal input end Rx in the second track lamp assembly 20B is pulled up to the first level (high level), and its voltage value is equal to the difference between the voltage on the data transmission line LC and the stabilizing voltage of the first voltage stabilizing diode DZ1, and is also equal to the product of the stabilizing current of the first voltage stabilizing diode DZ1 at this time and the resistance value of the second resistor R2 (with the common terminal SGND as the potential zero point). In this way, the first track lamp assembly 20A transmits the first level to each second track lamp assembly 20B.

[0046] It can be seen that the data sending circuit 21 in the embodiment of the present application only includes a resistor and a switching element, and the data receiving short circuit only includes a voltage stabilizing diode and a resistor. The above can be realized with a very simple circuit structure. Figure 2 The track lamp assembly shown in the figure is beneficial to simplifying the internal structure, design process and installation process of the track 10 and the track lamp assembly 20, and greatly improving the use convenience of the wired intelligent track lamp product.

[0047] In one example, Figure 3 The second track lamp assembly shown also includes a lighting circuit (not shown) connected to the lighting control end of the control circuit 23 in the second track lamp assembly. The lighting circuit is configured to emit light under the control of the lighting control signal at the lighting control end; the control circuit 23 in the first track lamp assembly includes a processor (not shown) and a memory (not shown) for storing the executable instructions of the processor. The processor is used to send a data signal including a lighting control instruction and switching between the first level and the second level to at least one second track lamp assembly through the data transmission line LC in the track when executing the executable instructions, so that the control circuit 23 in the second track lamp assembly generates a lighting control signal according to the lighting control instruction. That is, when the above first track assembly 20A is the control host and the above second track assembly 20B is the track lamp, the first track assembly 20A can send a lighting control instruction to each second track assembly 20B based on the above data transmission principle, so that each second track assembly 20B can emit light according to the lighting control instruction, thereby realizing convenient functions such as the above voice control switch, timing switch, custom condition switch, and lighting effect switching.

[0048] Figure 7 is a schematic circuit structure diagram of a track lamp assembly in an embodiment of the present application. Refer to Figure 7 , as another possible implementation manner of the track lamp assembly, has as Figure 2The track light assembly with the internal structure of the track light assembly shown in may specifically include a data sending circuit 21, a data receiving circuit 22, a control circuit 23, a rectifying circuit 24, and a voltage converter circuit 25. Among them, the voltage input terminal of the voltage converter circuit 25 is connected to the first output terminal V1 of the rectifying circuit 24, the ground terminal of the voltage converter circuit 25 is connected to the common terminal, and the voltage output terminal VDD of the voltage converter circuit 25 is respectively connected to the control circuit 23, the data sending circuit 21, and the data receiving circuit 22. Thus, the voltage converter circuit 25 can provide operating voltages for the control circuit 23, the data sending circuit 21, and the data receiving circuit 22.

[0049] It should be understood that the voltage at the first output terminal V1 of the rectifying circuit 24 is close to or equal to the voltage (48V) at the positive power supply terminal U1, so it may be higher than the rated operating voltages of the control circuit 23, the data sending circuit 21, and the data receiving circuit 22 and cannot be directly used for power supply. At this time, the voltage converter circuit 25 can convert the voltage at the first output terminal V1 into the operating voltages of the control circuit 23, the data sending circuit 21, and the data receiving circuit 22 based on the circuit structure of any DC-DC voltage converter to achieve the above power supply function. Of course, when the internal circuit of the track light assembly requires voltages of multiple different voltage values, the voltage converter circuit 25 may further include more voltage output terminals to provide corresponding voltages through the circuit structures of corresponding DC-DC voltage converters.

[0050] See Figure 7 , Figure 7The data sending circuit 21 therein includes a first transistor Q1, a second transistor Q2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7; wherein, the first end of the third resistor R3 is connected to the first output end of the rectifying circuit 24, and the second end of the third resistor R3 is connected to the data transceiver terminal SR; the first end of the fourth resistor R4 is connected to the signal output end Tx of the control circuit 23, and the second end of the fourth resistor R4 is connected to the gate of the first transistor Q1; the first end of the fifth resistor R5 is connected to the voltage output end VDD of the voltage converter circuit 25, and the second end of the fifth resistor R5 is connected to the gate of the first transistor Q1; the first end of the sixth resistor R6 is connected to the gate of the first transistor Q1, and the second end of the sixth resistor R6 is connected to the common terminal; the first pole of the first transistor Q1 other than the gate is connected to the gate of the second transistor Q2, and the second pole of the first transistor Q1 other than the gate is connected to the common terminal; the first end of the seventh resistor R7 is connected to the voltage output end VDD of the voltage converter circuit 25, and the second end of the seventh resistor R7 is connected to the gate of the second transistor Q2; the first pole of the second transistor Q2 other than the gate is connected to the data transceiver terminal SR, and the second pole of the second transistor Q2 other than the gate is connected to the common terminal. Thus, when the voltage level at the signal output end Tx is the first level (high level), the first transistor Q1 operates in the linear region or the saturation region, so that the voltage at the gate of the second transistor Q2 is pulled down to the second level (low level), causing the second transistor Q2 to operate in the cut-off region, and the data transceiver terminal SR has a positive power supply voltage signal (the first level / high level) limited by the third resistor R3; when the voltage level at the signal output end Tx is the second level (low level), the first transistor Q1 operates in the cut-off region, so that the voltage at the gate of the second transistor Q2 is the first level (high level) provided by the voltage output end VDD, causing the second transistor Q2 to operate in the linear region or the saturation region, and the voltage at the data transceiver terminal SR is pulled down to the second level (low level). It can be seen that the above circuit structure realizes the function of the data sending circuit 21 described above.

[0051] See Figure 7 , Figure 7The data receiving circuit 22 therein includes a second voltage stabilizing diode DZ2, a third transistor Q3, a fourth transistor Q4, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, and an eleventh resistor R11. Among them, the negative electrode of the second voltage stabilizing diode DZ2 is connected to the data transceiver terminal SR, and the positive electrode of the second voltage stabilizing diode DZ2 is connected to the first end of the eighth resistor R8. The second end of the eighth resistor R8 is connected to the gate of the third transistor Q3. The first end of the ninth resistor R9 is connected to the gate of the third transistor Q3, and the second end of the ninth resistor R9 is connected to the common terminal. The first end of the tenth resistor R10 is connected to the voltage output terminal VDD of the voltage converter circuit 25, and the second end of the tenth resistor R10 is connected to the gate of the fourth transistor Q4. The first end of the eleventh resistor R11 is connected to the voltage output terminal VDD of the voltage converter circuit 25, and the second end of the eleventh resistor R11 is connected to the signal input terminal Rx of the control circuit 23. The first pole of the third transistor Q3 other than the gate is connected to the gate of the fourth transistor Q4, and the second pole of the third transistor Q3 other than the gate is connected to the common terminal. The first pole of the fourth transistor Q4 other than the gate is connected to the signal input terminal Rx of the control circuit 23, and the second pole of the fourth transistor Q4 other than the gate is connected to the common terminal. Thus, when the voltage at the data transceiver terminal SR is at the first level (high level), the second voltage stabilizing diode DZ2 is in the voltage stabilizing state of reverse breakdown, so that the third transistor Q3 operates in the linear region or the saturation region, pulling down the voltage at the gate of the fourth transistor Q4 to the second level (low level), making the fourth transistor Q4 operate in the cut-off region, and the first level (high level) provided by the voltage output terminal VDD at the signal input terminal Rx. When the voltage at the data transceiver terminal SR is at the second level (low level), the second voltage stabilizing diode DZ2 is in the state of forward bias or reverse bias but not broken down, the third transistor Q3 operates in the cut-off region, the first level (high level) provided by the voltage output terminal VDD is at the gate of the fourth transistor Q4, so that the fourth transistor Q4 operates in the linear region or the saturation region, and the voltage at the signal input terminal Rx is pulled down to the second level (low level). It can be seen that the above circuit structure realizes the function of the data receiving circuit 22 as described above.

[0052] It should be understood that the first level and the second level described herein respectively refer to different voltage ranges at the same circuit node. In one example, the control circuit 23 is configured to determine the level of the voltage at the signal input terminal Rx by comparing the voltage value at the signal input terminal Rx with the reference voltage value. For example, when the voltage on the positive power supply voltage line LA is 48V, the voltage of the first level on the data transmission line LC is equal to or close to 48V, while the voltage of the second level on the data transmission line LC is equal to or close to 0V on the negative power supply voltage line LB. However, Figure 7The voltage of the first level at the signal input terminal Rx in the circuit structure is close to or equal to the voltage at the first output terminal VDD of the voltage converter circuit 25 (such as 15V), while the voltage of the second level at the signal input terminal Rx is close to or equal to the voltage at the common terminal. It can be seen that for different circuit nodes, the voltage ranges of the first level and the second level may be different. In one example, the above reference voltage value can be set to be equal to the sum of the stabilizing voltage of the second zener diode DZ2 and the gate conduction voltage of the third transistor Q3, so as to achieve a reference voltage value close to half of the voltage of the first level at the input terminal Rx, which helps to improve the anti-interference ability and data transmission efficiency of the data sending circuit 21 and the data receiving circuit 22.

[0053] It should also be understood that the third resistor R3 in the above example not only plays a role in current limiting, but also can improve the load-carrying capacity of the data transmission line LC. When each track light assembly installed on the track 10 includes the above third resistor R3, the third resistors R3 in each track light assembly are in a parallel relationship between the positive power supply voltage line LA and the data transmission line LC, so that the high-level voltage on the data transmission line LC will not drop to the low-level voltage range due to the excessive number of installed track light assemblies, that is, it can support more track light assemblies to be installed on the track 10 at the same time. Among them, the larger the resistance value of the third resistor R3, the stronger the above load-carrying capacity, and it can be set according to the application requirements. In addition, the resistance value of the above seventh resistor R7 affects the switching speed of the second transistor Q2. The smaller the resistance value of the seventh resistor R7, the faster the switching speed of the second transistor Q2. Various levels of data transmission rates can be achieved according to different device parameters. In one example, the stabilizing voltage of the second zener diode DZ2 is half of the high-level voltage on the data transmission line LC, which can help improve the sensitivity of the data receiving circuit 22. In addition, reducing the resistance values of the third resistor R3, the eighth resistor R8, and the ninth resistor R9 in proportion can increase the switching speed of the third transistor Q3, and adjusting the resistance value of the tenth resistor R10 can adjust the switching speed of the fourth transistor Q4. Appropriate devices can be selected according to the application requirements to obtain the required data receiving sensitivity. Similarly, the device parameters can also be adjusted based on the above circuit working principle according to the application requirements to realize a track light assembly that meets the application requirements.

[0054] It should be noted that the above are only optional embodiments of the present application, and the above implementation methods can be appropriately modified according to actual application requirements. For example, in any of the above circuit structures, any resistor can be implemented by multiple resistors with a series structure and / or a parallel structure, and any capacitor can be implemented by multiple capacitors with a series structure and / or a parallel structure.

[0055] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An orbital lamp assembly, characterized in that, The track light assembly is used to be installed on a track. The positive power supply terminal, negative power supply terminal and data transceiver terminal of the track light assembly installed on the track are respectively connected to the positive power supply voltage line, negative power supply voltage line and data transmission line in the track. The track light assembly includes a data sending circuit, a data receiving circuit and a control circuit. Among them, the data sending circuit is respectively connected to the positive power supply terminal, the data transceiver terminal and the signal output terminal of the control circuit. The data sending circuit is configured to provide the positive power supply voltage signal to the data transceiver terminal after current limiting when the voltage at the signal output terminal is the first level, and provide the voltage signal with the second level to the data transceiver terminal when the voltage at the signal output terminal is the second level. Among them, the positive power supply voltage signal is the voltage signal with the first level provided by the positive power supply terminal, and the first level is higher than the second level. the data receiving circuit is respectively connected to the data transceiver terminal and the signal input terminal of the control circuit. The data receiving circuit is configured to set the voltage at the signal input terminal to the first level when the voltage at the data transceiver terminal is the first level, and set the voltage at the signal input terminal to the second level when the voltage at the data transceiver terminal is the second level. the control circuit is configured to provide a data signal with the voltage switching between the first level and the second level to the signal output terminal during the data sending period, and receive the data signal transmitted on the data transmission line by determining the level of the voltage at the signal input terminal during the period other than the data sending period.

2. The track light assembly according to claim 1, wherein, Corresponding to the track where the data transmission line includes a first data transmission line and a second data transmission line, the data transceiver terminal of the track light assembly includes a first terminal for connecting the first data transmission line and a second terminal for connecting the second data transmission line, and the first terminal is connected to the second terminal.

3. The track light assembly according to claim 1 or 2, characterized in that, The track light assembly further includes a rectifying circuit arranged between the data sending circuit and the positive power supply terminal. The first input terminal of the rectifying circuit is connected to the positive power supply terminal, the second input terminal of the rectifying circuit is connected to the negative power supply terminal, the first output terminal of the rectifying circuit is connected to the data sending circuit, and the second output terminal of the rectifying circuit is connected to the common terminal of the track light assembly.

4. The track light assembly according to claim 3, wherein, The rectifying circuit includes a first diode, a second diode, a third diode and a fourth diode. Among them, the first input terminal of the rectifying circuit is respectively connected to the positive electrode of the first diode and the negative electrode of the fourth diode, the second input terminal of the rectifying circuit is respectively connected to the positive electrode of the second diode and the negative electrode of the third diode, the first output terminal of the rectifying circuit is respectively connected to the negative electrode of the first diode and the negative electrode of the second diode, and the second output terminal of the rectifying circuit is respectively connected to the positive electrode of the third diode and the positive electrode of the fourth diode.

5. The track light assembly according to claim 4, wherein, the data sending circuit includes a first resistor and a first switching element, and the data receiving circuit includes a first zener diode and a second resistor. Among them, The first end of the first resistor is connected to the first output end of the rectifier circuit, and the second end of the first resistor is connected to the data transceiver end; The control end of the first switching element is connected to the signal output end of the control circuit. The first end of the first switching element is connected to the data transceiver end, and the second end of the first switching element is connected to the common end. The first switching element is a switching element that is disconnected between the first end and the second end when the voltage at the control end is the first level and is connected between the first end and the second end when the voltage at the control end is the second level; The positive electrode of the first voltage stabilizing diode is connected to the signal input end of the control circuit, and the negative electrode of the first voltage stabilizing diode is connected to the data transceiver end; The first end of the second resistor is connected to the signal input end of the control circuit, and the second end of the second resistor is connected to the common end. The voltage value obtained by multiplying the resistance value of the second resistor by the minimum stable current of the first voltage stabilizing diode is within the voltage value range of the first level.

6. The track light assembly according to claim 4, wherein, The track light assembly further includes a voltage converter circuit. The voltage input end of the voltage converter circuit is connected to the first output end of the rectifier circuit, the grounding end of the voltage converter circuit is connected to the common end, and the voltage output end of the voltage converter circuit is respectively connected to the control circuit, the data sending circuit, and the data receiving circuit. The voltage converter circuit is configured to provide operating voltage to the control circuit, the data sending circuit, and the data receiving circuit.

7. The track light assembly according to claim 6, wherein The data sending circuit includes a first transistor, a second transistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor; wherein, The first end of the third resistor is connected to the first output end of the rectifier circuit, and the second end of the third resistor is connected to the data transceiver end; The first end of the fourth resistor is connected to the signal output end of the control circuit, and the second end of the fourth resistor is connected to the gate of the first transistor; The first end of the fifth resistor is connected to the voltage output end of the voltage converter circuit, and the second end of the fifth resistor is connected to the gate of the first transistor; The first end of the sixth resistor is connected to the gate of the first transistor, and the second end of the sixth resistor is connected to the common end; The first pole other than the gate of the first transistor is connected to the gate of the second transistor, and the second pole other than the gate of the first transistor is connected to the common end; The first end of the seventh resistor is connected to the voltage output end of the voltage converter circuit, and the second end of the seventh resistor is connected to the gate of the second transistor; The first pole other than the gate of the second transistor is connected to the data transceiver end, and the second pole other than the gate of the second transistor is connected to the common end.

8. The track light assembly according to claim 7, wherein, The data receiving circuit includes a second voltage stabilizing diode, a third transistor, a fourth transistor, an eighth resistor, a ninth resistor, a tenth resistor, and an eleventh resistor; wherein, The negative electrode of the second voltage stabilizing diode is connected to the data transceiver end, and the positive electrode of the second voltage stabilizing diode is connected to the first end of the eighth resistor; The second terminal of the eighth resistor is connected to the gate of the third transistor; The first terminal of the ninth resistor is connected to the gate of the third transistor, and the second terminal of the ninth resistor is connected to the common terminal; The first terminal of the tenth resistor is connected to the voltage output terminal of the voltage converter circuit, and the second terminal of the tenth resistor is connected to the gate of the fourth transistor; The first terminal of the eleventh resistor is connected to the voltage output terminal of the voltage converter circuit, and the second terminal of the eleventh resistor is connected to the signal input terminal of the control circuit; The first pole of the third transistor other than the gate is connected to the gate of the four transistors, and the second pole of the third transistor other than the gate is connected to the common terminal; The first pole of the fourth transistor other than the gate is connected to the signal input terminal of the control circuit, and the second pole of the fourth transistor other than the gate is connected to the common terminal.

9. The track light assembly according to claim 8, wherein, The control circuit is configured to determine the level of the voltage at the signal input terminal by comparing the voltage value at the signal input terminal with a reference voltage value, and the reference voltage value is equal to the sum of the stabilizing voltage of the second zener diode and the gate conduction voltage of the third transistor.

10. An orbital lighting device, characterized in that, The track lighting device includes: a track, and at least one track lamp assembly as described in any one of claims 1 to 9 mounted on the track.

11. The track lighting device according to claim 10, characterized in that, The track lighting device includes at least two of the track lamp assemblies, and the at least two track lamp assemblies include a first track lamp assembly and at least one second track lamp assembly; wherein, The second track lamp assembly further includes a lighting circuit connected to the lighting control terminal of the control circuit in the second track lamp assembly, and the lighting circuit is configured to emit light under the control of a lighting control signal at the lighting control terminal; The control circuit in the first track lamp assembly includes a processor and a memory for storing executable instructions of the processor, and the processor is configured to send, when executing the executable instructions, a data signal including a lighting control instruction and switching between the first level and the second level to the at least one second track lamp assembly through a data transmission line in the track, so that the control circuit in the second track lamp assembly generates the lighting control signal according to the lighting control instruction.

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