CN216434619U

CN216434619U - Camera buckle interface module and camera buckle

Info

Publication number: CN216434619U
Application number: CN202122951704.5U
Authority: CN
Inventors: 徐鹏; 余东洋
Original assignee: Zhengzhou Wandilai Electronic Technology Co ltd
Current assignee: Zhengzhou Wandilai Electronic Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-03
Anticipated expiration: 2031-11-29

Abstract

The invention discloses a camera pinch plate interface module and a camera pinch plate, which aim to solve the technical problem that the existing camera pinch plate is insufficient in compatibility. The interface comprises a fixed plate, a connector, a first circuit board and a contact terminal, wherein the fixed plate is fixedly connected with the first circuit board, the contact terminal is fixed on the first circuit board and penetrates through the fixed plate, the plug connector is electrically connected with the circuit board, the first circuit board is provided with an MCU (microprogrammed control Unit) controller, a resistance identification circuit, a voltage switching circuit and an interface conversion circuit, and the voltage switching circuit comprises ideal diodes which are connected in parallel. The interface module and the shell are detachably connected to form a camera pinch plate. The invention has the beneficial effects that: the universality is strong, the use is convenient, the resources are saved, and the safety is high.

Description

Camera buckle interface module and camera buckle

Technical Field

The invention relates to the technical field of cameras, in particular to a camera pinch plate interface module and a camera pinch plate.

Background

With the development of the technology, the functions and the types of the cameras are more and more, which puts diversified requirements on a power supply system; the difference of the power supply system (battery pack) also causes the difference of the hanging buckle plate matched with the power supply system. However, for a single camera, if the single camera is required to be replaced by other types of batteries, the whole pinch plate needs to be replaced, and the cost is high.

The current camera batteries are mainly of the following type: 1. battery type 1: the battery pack comprises a positive electrode and a negative electrode of a battery pack with nominal voltage of 26V, an identification resistor (12K grounding), a communication interface (serial port protocol);

2. battery type 2: a battery pack anode and cathode with a nominal voltage of 14.8V (remark: no identification resistor) + a communication interface (serial port protocol);

3. battery type 3: the battery pack positive and negative electrodes with the nominal voltage of 29.6V + identification resistor (43K grounding) + communication interface (HDQ protocol);

4. battery type 4: the nominal voltage is 14.8V, the positive and negative poles of the battery pack are connected with an identification resistor (43K grounded), and a communication interface (HDQ protocol) is connected with the identification resistor.

The existing pinch plate can only be matched with one battery, the compatibility is not enough, and a lot of troubles are brought to the use of users.

Disclosure of Invention

The invention provides a camera pinch plate interface module and a camera pinch plate, which aim to solve the technical problem that the existing camera pinch plate is insufficient in compatibility.

In order to solve the technical problems, the invention adopts the following technical scheme:

the design is a camera buckle interface module, which comprises a fixing plate, a connector, a first circuit board and a contact terminal, wherein the fixing plate is fixedly connected with the first circuit board, the contact terminal is fixed on the first circuit board and penetrates through the fixing plate, the connector is electrically connected with the first circuit board, an MCU (microprogrammed control unit) controller, a resistance identification circuit, a voltage switching circuit and an interface conversion circuit are arranged on the first circuit board, and the voltage switching circuit comprises ideal diodes connected in parallel.

Further, the connector is disposed on a second circuit board, and the second circuit board is electrically connected to the first circuit board.

Further, the second circuit board is a flexible circuit board and comprises an installation part and a connection part, the connection part is fixed between the fixing plate and the first circuit board, and the connector is arranged on the installation part.

Furthermore, the ideal diode comprises a driving chip and a field effect transistor which are correspondingly connected, wherein the source electrode of the field effect transistor is connected with the input end of the voltage switching circuit, and the drain electrode of the field effect transistor is connected with the output end of the voltage switching circuit.

Furthermore, the resistance recognition circuit comprises a matching resistor, one end of the matching resistor is connected with the MCU controller, the other end of the matching resistor is connected with the camera battery, and the other end of the matching resistor is also connected with recognition voltage.

Furthermore, the voltage identification circuit comprises a divider resistor, one end of the divider resistor is connected with the MCU controller, and the other end of the divider resistor is connected with the camera battery.

Further, the interface conversion circuit comprises an input interface, a conversion chip and an output interface, the camera is connected with the conversion chip through the input interface and is used for converting a communication protocol into a double-wire serial port type and sending the double-wire serial port type to the MCU controller, and the MCU controller integrates the double-wire serial port type communication protocol, converts the double-wire serial port type communication protocol into a single-wire serial port type through the conversion chip and finally outputs the single-wire serial port type through the output interface.

Still design a camera buckle, including the buckle casing and above-mentioned camera buckle interface module of can dismantling the connection.

Compared with the prior art, the invention has the beneficial technical effects that:

1. according to the invention, the battery contact terminals with different specifications are integrated on the same module, the terminals with the same function can be shared, the integration level is high, meanwhile, different batteries can find corresponding contact terminals on the module to realize connection, the condition that different batteries can share the same module is ensured, and the universality of the battery pinch plate is improved.

2. According to the invention, the interface module is improved, the existing shell is kept unchanged, only the original interface module is replaced by the module in the invention, the preparation is convenient, and the resources are saved.

3. In the voltage switching circuit, the battery interface HV and the battery interface LV are respectively connected in parallel through ideal diodes, so that short circuit can be avoided, and self-adaptive high-voltage output is realized.

4. The invention can automatically identify different battery parameters including battery voltage, identification resistance size, communication protocol and the like, and sends effective battery information to the camera through the connector.

Drawings

FIG. 1 is a front view of the camera gusset of the present invention.

FIG. 2 is a rear view of the camera gusset of the present invention.

Fig. 3 is a schematic structural diagram of the camera buckle interface module of the present invention.

Fig. 4 is a top view of the camera gusset plate interface module of the present invention.

Fig. 5 is an exploded view of the camera gusset interface module of the present invention.

Fig. 6 is a schematic circuit diagram of the camera buckle interface module of the present invention.

FIG. 7 is an internal circuit diagram of the camera gusset plate interface module of the present invention.

FIG. 8 is a circuit diagram of a voltage switching circuit of the camera gusset plate interface module of the present invention.

FIG. 9 is a circuit diagram of a resistance identification circuit of the camera pinch plate interface module of the present invention.

FIG. 10 is a circuit diagram of a voltage identification circuit of the camera buckle interface module of the present invention.

FIG. 11 is a circuit diagram of an interface conversion circuit of the camera pinch plate interface module of the present invention.

In the figure, a housing 1, a mounting hole 101, a mounting groove 102, a fixing plate 2, a first circuit board 3, a contact terminal 4, a flexible circuit board 5, a mounting portion 501, a connecting portion 502, and a connector 6 are shown.

Detailed Description

The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.

Example 1: a camera buckle plate is shown in figures 1 and 2 and comprises a shell 1 and an interface module, wherein the interface module comprises a fixing plate 2, and the fixing plate 2 is fixed on the shell 1 in a detachable mode such as a screw. Three mounting holes 101 and a mounting groove 102 are provided on the housing 1, the interface module is mounted on the back of the housing 1, and the contact terminals 4 on the interface module protrude out of the mounting groove 102. When the camera battery is hung on the mounting hole 101, the connection port on the camera battery is contacted with the contact terminal 4 to form electric connection, the contact terminal 4 comprises a connection port matched with almost all types of batteries, and the connection port position on the battery is designed according to the industry standard, so that the situation that a plurality of ports are concentrated into a whole and are not misplaced can be avoided.

In this embodiment, the interface module includes 7 contact terminals 4, and the terminals corresponding to different types of batteries are different, see fig. 6, taking 4 types of batteries with the widest application range as an example:

battery 1: the battery is connected with 7 terminals in total, namely 1, 2, 3, 4, 5, 6 and 7; the port 1 is a negative electrode, the port 2 is a serial port protocol communication interface, the port 5 is a 12K grounded identification resistor, the port 7 is a 26V voltage terminal, and 26V voltage is output to supply power for the camera after the hanging buckle plate is connected;

a battery 2: the battery is connected with 4

terminals

1, 2, 6 and 7; the port 1 is a negative electrode, the port 2 is a serial port protocol communication interface, the port 7 is a 14.8V voltage terminal, and 14.8V voltage is output to supply power to the camera after the hanging buckle plate is connected;

a battery 3: the battery is connected with 7 terminals in total, namely 1, 2, 3, 4, 5, 6 and 7; the port 1 is a negative electrode, the port 2 is an HDQ bus protocol communication interface, the port 3 is a high-voltage identification terminal, the port 4 is a 29.6V voltage terminal, the port 5 is a 43K grounded identification resistor, the port 7 is a 14.8V voltage terminal, and 29.6V voltage is output to supply power to the camera through the hanging buckle plate;

battery 4: the battery is connected with 7 terminals in total, namely 1, 2, 5, 6 and 7; the port 1 is a negative electrode, the port 2 is an HDQ bus protocol communication interface, the port 5 is a 43K grounded identification resistor, the port 7 is a 14.8V voltage terminal, and 14.8V voltage is output to supply power for the camera after the hanging buckle plate is connected.

The structure of the interface module is shown in fig. 3 to 5, and includes a fixing plate 2, a first circuit board 3, a contact terminal 4, a flexible circuit board 5, and a connector 6, where the fixing plate 2 is an insulating structure and detachably connected to the housing 1. The fixing plate 2 and the first circuit board 3 are fixedly connected by screws, and the contact terminals 4 are fixed to the first circuit board 3 and protrude from the fixing plate 2. In order to expand the circuit function, a second circuit board, namely a flexible circuit board 5 is further arranged, the flexible circuit board 5 comprises a mounting part 501 and a connecting part 502, and a connector 6 is arranged on the mounting part 501 and used for being connected with the interior of the camera and sending battery information to the camera. The circuit structure of the interface module can be distributed on the mounting portion 501 of the first circuit board 3 or the flexible circuit board 5 according to design requirements. The connecting portion 502 of the flexible circuit board 5 is a strip, one end of the connecting portion is matched with the shape of the fixing plate 2, the connecting portion 502 is arranged between the first circuit board 3 and the fixing plate 2, the first circuit board 3 is a PCB board, and the connecting portion 502 of the flexible circuit board 5 is pressed and electrically connected through the PCB board.

Referring to fig. 7, the

ports

4 and 7 are power supply portions, the ports D1 and D2 are ideal diodes based on MOS, the port 4 and the port 7 may output three different voltages of 29.6V, 14.8V and 26V, and after passing through the ports D1 and D2, the output voltage with high priority is output to the outside, so that mutual interference between different port voltages is avoided. The port 5 is an identification resistor interface and is externally connected with different ground resistors, and the MCU collects the difference of the external resistors and distinguishes different battery packs. The port 3 is a high-voltage identification interface, and through the interface, the external battery pack can be identified to be 29.6V or 14.8V. The port 2 is a communication input interface, the communication input is provided with two communication protocols of a serial port and an HDQ, and the MCU reads the battery pack information through the interface, performs optimization conversion and outputs the battery pack information through serial port communication.

The ports 1-7 are in one-to-one correspondence with the seven contact terminals 4, while the terminals 1-5 on the right side of the pinch plate in fig. 6 correspond to the connector 6. Specifically, the

ports

4 and 7 are connected to a voltage switching circuit, as shown in fig. 8, U1 is a driving chip, and is combined with the field-effect transistor Q1 to form an ideal diode, and a zener diode is connected in parallel between the source and drain of Q1 to play a role in protection; the U1 drives the Q1 to conduct in the forward direction, so that the diode has the one-way conductivity of a conventional diode, and meanwhile, because the on resistance of the field effect transistor Q1 is very low, the voltage drop when current passes is very low and is almost 0; therefore, the circuit is equivalent to a diode with a forward voltage drop of almost 0, and similarly, U2 and Q2 constitute a second ideal diode. The battery interface HV (port 4) and the battery interface LV (port 7) are connected in parallel through ideal diodes respectively, short circuit can be avoided, and self-adaptive high-voltage output is achieved.

The port 5 is connected with a resistor identification circuit, referring to fig. 9, the identification resistor is a built-in structure of the battery pack and is connected with the resistor R15 in parallel, the identification resistors with different resistance values are connected, currents on the R15 are different, and after the single chip microcomputer AD samples, the identification resistors are distinguished from each other, and then different battery types are distinguished. Assuming that the identification resistance is defined as Rid, the forward voltage drop of D8 is defined as Vd, and the voltage of MCU (RS-AD) is defined as Vid, then: (3.3-Vd)/(R14 + Rid)) + rd + Vd = Vad according to this formula, the resistance value of the identifying resistor Rid can be obtained according to the voltage value Vad of the AD sample.

The port 3 is connected with a voltage identification circuit, see fig. 10, and is a suspended port and a voltage dividing resistor, when batteries with different voltages are connected to the resistor, the generated currents are different, and the MCU identifies the currents to determine the voltage of the connected battery.

The port 2 is connected with an interface conversion circuit, referring to fig. 11, a single-wire serial port protocol or HDQ protocol DATA of a camera battery is connected with a DATA-IN interface, and the DATA-IN interface is converted into a two-wire serial port through the conversion circuit and then enters a U3-MCU from TXD0 and RXD 0; after the MCU integrates the read DATA, the DATA are finally output from the TXD1 and the RXD1 through a DATA-OUT interface through a serial circuit from a double-wire serial port to a single-wire serial port.

Can compatible various A type batteries through above-mentioned interface module, can freely change the battery, power module is inside to contain switching circuit and identification circuit and communication circuit, can the suitable supply voltage passageway of automatic switch-over to send effectual battery information for the camera. In addition, to current buckle structure, only need with original interface module replace can, not need whole abandonment, reduce and use the degree of difficulty, resources are saved.

While the present invention has been described in detail with reference to the drawings and the embodiments, those skilled in the art will understand that various specific parameters in the above embodiments can be changed without departing from the spirit of the present invention, and a plurality of specific embodiments are formed, which are common variation ranges of the present invention, and will not be described in detail herein.

Claims

1. The utility model provides a camera buckle interface module, its characterized in that includes fixed plate, connector, first circuit board, contact terminal, the fixed plate with first circuit board fixed connection, contact terminal is fixed in on the first circuit board and pass the fixed plate, the connector with first circuit board electricity is connected, be equipped with MCU controller, resistance identification circuit, voltage switching circuit, interface conversion circuit on the first circuit board, voltage switching circuit is including parallelly connected ideal diode.

2. The camera pinch plate interface module of claim 1, wherein the connector is disposed on a second circuit board, the second circuit board being electrically connected to the first circuit board.

3. The camera pinch plate interface module of claim 2, wherein the second circuit board is a flexible circuit board and includes an installation portion and a connection portion, the connection portion is fixed between the fixing plate and the first circuit board, and the connector is disposed on the installation portion.

4. The camera pinch plate interface module according to claim 1, wherein the ideal diode comprises a driving chip and a field effect transistor which are correspondingly connected, a source electrode of the field effect transistor is connected with an input end of the voltage switching circuit, and a drain electrode of the field effect transistor is connected with an output end of the voltage switching circuit.

5. The camera pinch plate interface module of claim 1, wherein the resistor identification circuit comprises a matching resistor, one end of the matching resistor is connected with the MCU controller, the other end of the matching resistor is connected with a camera battery, and the other end of the matching resistor is further connected with identification voltage.

6. The camera pinch plate interface module of claim 1, wherein the voltage identification circuit comprises a voltage divider resistor, one end of the voltage divider resistor is connected with the MCU controller, and the other end of the voltage divider resistor is connected with a camera battery.

7. The camera pinch plate interface module according to claim 1, wherein the interface conversion circuit comprises an input interface, an output interface, a first conversion circuit and a second conversion circuit, the input interface is correspondingly connected with the input end of the MCU controller through the first conversion circuit, and the output end of the MCU is correspondingly connected with the output interface through the second conversion circuit; the first conversion circuit is used for converting input end single-wire serial port protocol data or input end HDQ protocol data into double-wire serial port protocol data, and the second conversion circuit is used for converting the double-wire serial port protocol data into output end single-wire serial port protocol data.

8. A camera gusset comprising a gusset shell removably attached and a camera gusset interface module of any of claims 1-7.